Curriculum Vitae

 

John E. Mayfield

 

Department of Genetics, Development, and Cell Biology                

2106 Molecular Biology Bldg.                                                       

Iowa State University

Ames, Iowa 50011

(515) 294-6847

FAX:  (515) 294-6755                                                                  

jemayf@iastate.edu

 

Positions:

1989-present          Professor, Iowa State University

1995-2004             Associate Dean of the Graduate College, Iowa State University

1994-1995             Chair, Interdepartmental Genetics Major

1983-1986             Chair, Molecular, Cellular and Developmental Biology Interdepartmental Graduate Major

1981                      Visiting Lecturer, Trinity College, University of Dublin, Dublin, Ireland

1979-1989             Associate Professor of Zoology, Iowa State University

1977-1979             Assistant Professor of Zoology, Iowa State University, Ames, Iowa

1977                      Visiting Associate, Harvard University Biological Laboratories

1971-1977             Assistant Professor of Biology, Carnegie-Mellon University

1971                      Instructor of Developmental Biology, California Institute of Technology

1968-1971             Postdoctoral Fellow, California Institute Technology

 

Education:

1968                      University of Pittsburgh, Pittsburgh, PA             Ph.D.         Biophysics

1965                      University of Pittsburgh, Pittsburgh, PA             M.S.          Biophysics

1963                      College of Wooster, Wooster, Ohio                  B.S.           Physics

 

Current Research Interests:             Evolution as Computation, Complexity

 

Professional Honors:

Elected to the executive board of the Midwestern Association of Graduate Schools (2003-2007).  President of the Midwestern Association of Graduate Schools (2005-2006).

 

Teaching:

Have taught thousands of students over the past 35 years at both the graduate and undergraduate level.  Subjects include Cell and Molecular Biology, Genetics, Introductory Biology, and Complex Adaptive Systems.

 

Publications:

 

a) Theses

John E. Mayfield (1965).  "Ultraviolet Dichroism of Flow Oriented Bacteriophage fd."  Masters Thesis, University of Pittsburgh.

John E. Mayfield (1968).  "Quantitative Interpretation of Ultraviolet Flow Dichroism."  Ph.D. Thesis, University of Pittsburgh.

b) Peer Reviewed Scientific Articles

1  Irwin J. Bendet and John E. Mayfield (1967).  "Ultraviolet Dichroism of fd Bacteriophage."  Biophysical Journal 7, 111-119.

2  John E. Mayfield and Irwin J. Bendet (1970).  "Quantitative Flow Dichroism.  I. Correction for Disorientation in a Solution of Rods."  Biopolymers 9, 655-668. 

3  John E. Mayfield and Irwin J. Bendet (1970).  "Quantitative Flow Dichroism.  II.  Form Dichroism at Ultraviolet Wavelengths."  Biopolymers 9, 669-675.

4  John E. Mayfield and James Bonner (1971).  "Tissue Differences in Rat Chromosomal RNA."  Proc. Nat. Acad. Sci. 68, 2652-2655.

5  John E. Mayfield and James Bonner (1972).  "A Partial Sequence of Nuclear Events in Regenerating Rat Liver."  Proc. Nat. Acad. Sci. 69, 7-10.

6  David S. Holmes, John E. Mayfield, Gernot Sander and James Bonner (1972).  "Chromosomal RNA:  Its properties."  Science 177, 72-74.

7  David S. Holmes, John E. Mayfield and James Bonner (1974).  "Sequence Composition of Rat Ascites Chromosomal Ribonucleic Acid."  Biochemistry 13, 849-855.

8  John E. Mayfield and John R. Ellison (1975).  "The Organization of Interphase Chromatin in Drosophilidae.  The Self Adhesion of Chromatin Containing the Same DNA Sequences."  Chromosoma 52, 37-48.

9  John E. Mayfield and John E. Ellison (1975).  "An Improved Method for Isolating DNA from Adult Drosophila."  Drosophila Information Service 51, 144.

10 John E. Mayfield and John R. Ellison (1976).  "The Fluoresence Localization of Mouse Satellite DNA in Interphase Nuclei."  Chromosoma (Berl.) 54, 27-31.

11 R. Marino, K.N. Saksena, M. Schuler, J.E. Mayfield and P.A. Lemke (1976).  "Double-Stranded Ribonucleic Acid in Agaricus bisporus."  Applied and Environmental Microbiology 31, 433-438.

12 John E. Mayfield (1977).  "A Comparison of the Differential Melting Profiles with the CsCl Density Profiles of DNA from Escherichia coli, Cow, Mouse, Rat, and Chicken."  Biochem. Biophys. Acta 477, 97-101.

13 John E. Mayfield and Julie F. McKenna (1978).  "A-T Rich Sequences in Vertebrate DNA, A Possible Explanation of Q-Banding in Metaphase Chromosomes."  Chromosoma 67, 157-163.

14 John E. Mayfield, L.A. Serunian, L.M. Silver, and S.C.R. Elgin (1978).
"A Protein Released by DNAase 1 Digestion of Drosophila Nuclei is Preferentially Associated with Puffs."  Cell 14, 539-544.

15 John E. Mayfield, Julie F. McKenna, and Bruce Lessa (1980).  "The Sequence Organization of Bovine DNA."  Chromosoma 76, 277-294.

16 James A. Bassuk and John E. Mayfield (1982).  "Major High Mobility Group Like Proteins of Drosophila melanogaster Embryonic Nuclei."  Biochemistry 21, 1024-1027.

17 John E. Mayfield, Peter Good, Holly J. VanOort, Alphonso R. Campbell and David E. Reed (1983).  "The cloning and cleavage site mapping of the DNA from Bovine Herpesvirus-1 (Cooper Strain)."  Journal of Virology 47, 257-264.

18 Katherine Richardson, Renae M. Crosby, Peter Good, Nancy Rosen, and John Mayfield (1986).  "Bovine DNA Contains a Single Major Family of Interspersed Repetitive Sequences."  Eur. J. Biochem. 154, 349-358.

19 D. L. Rock, S. L. Beam, and J. E. Mayfield (1987).  "Mapping Bovine Herpesvirus Type 1 Latency-Related RNA in Trigeminal Ganglia of Latently Infected Rabbits."  Journal of Virology 61, 3827-3831.

20 John E. Mayfield, Betsy J. Bricker, Holly Godfrey, Renae M. Crosby, David J. Knight, Shirley M. Halling, Doris Balinsky and Louisa B. Tabatabai (1988).  "The cloning, expression, and nucleotide sequence of a gene coding for an immunogenic Brucella abortus protein."  Gene 63, 1-9.

21 Betsy J. Bricker, Louisa B. Tabatabai, Billy L. Deyoe, and John E. Mayfield (1989).  "Conservation of antigenicity in a 31 kD Brucella Protein."  Vet. Micro. 18, 313-325.

22 G. L. Lindberg, B. B. Shank, M. F. Rothschild, J. E. Mayfield, A. E. Freeman, C. M. Koehler, and D. C. Beitz (1989).  "Characteristics of mammary mitochondria in lines of mice genetically divergent for milk production."  J. Dairy Sci. 72, 1175-1181.

23 George W. Pugh, Jr., Louisa B. Tabatabai, Betsy J. Bricker, John E. Mayfield, Marshall Phillips, Timothy J. McDonald, and Emilie S. Zehr (1989).  "Identification of a possible virulence factor for Brucella abortus infection in BALB/c mice."  Am. J. Vet. Research, 50, 887-892.

24 D. R. Brown, C. M. Koehler, G. L. Lindberg, A. E. Freeman, J. E. Mayfield, A. M. Myers, M. M. Schutz and D. C. Beitz (1989)  "Molecular Analysis of Cytoplasmic Genetic Variation in Holstein Cows."  J. Animal Sci. 67, 1926-1932.

25 John E. Mayfield, John A. Bantle, Darla R. Ewalt, Vincent P. Meador, and Louisa B. Tabatabai (1990).  "Detection of Brucella cells and cell components."  In:  Animal Brucellosis, K. Nielsen and J. R. Duncan, eds., CRC Press, Inc., Boca Raton, Fla., pp. 97-120.

26 Bonnie L. Beck, Louisa B. Tabatabai, and John Mayfield (1990).  "A Protein Isolated from Brucella abortus is a Cu-Zn Superoxide Dimutase."  Biochemistry 29, 372-376.

27 Thomas J. Stabel, John E. Mayfield, Louisa B. Tabatabai and Michael J. Wannemuehler (1990).  Oral Immunization of Mice with Attenuated Salmonella typhimurium Containing a Recombinant Plasmid which Codes for Production of a 31-kDa Protein of Brucella abortus.  Infect. Immun. 58, 2048-2055.

28 George W. Pugh, Jr., Louisa B. Tabatabai, Betsy J. Bricker, John E. Mayfield, Marshall Phillips, Emilie Zehr, and Carol Belzer (1990).  "Immunogenicity of Brucella-extracted and recombinant protein vaccines in CD-1 and BALB/c mice."  Am. J. Vet. Research 51, 1413-1420.

29 Henderson, L. M., Katz, J. B., Erickson, G. A., and Mayfield, J. E.  (1990)  In vivo and In vitro Genetic Recombination Between Conventional and Gene-Deleted Vaccine Strains of Pseudorabies Virus.  Am. J. Vet. Res. 51, 1656-1662.

30 Betsy J. Bricker, Louisa B. Tabatabai, Bradley A. Judge, Billy L. Deyoe, and John E. Mayfield.  (1990).   Cloning, expression, and occurrence of the Brucella Cu-Zn superoxide dismutase.  Infect. Immun. 58, 2935-2939.

31 Betsy J. Bricker, Louisa B. Tabatabai, and John Mayfield.  (1991).  "IgG Binding by a macromolecule on the surface of Brucella abortus."  Mol. Immunol. 28, 35-39.

32 Carla M. Koehler, Gary L. Lindberg, Daniel R. Brown, Donald C. Beitz,
A. Eugene Freeman, John E. Mayfield and Alan M. Myers.  "Replacement of Bovine Mitochondrial DNA by a Sequence Variant Within a Single Generation."  (1991)  Genetics 129:247-255.

33 Thomas Stabel, John E. Mayfield, Louisa B. Tabatabai, and Michael J. Wannemuehler  (1991)  "Swine Immunity to an Attenuated Salmonella typhimurium Containing a Recombinant Plasmid Which Codes for Production of a 31-Kilodalton Protein of Brucella abortus."  Infect. Immun. 59: 2941-2947.

34 Shirley M. Halling, Philipe G. Detilleux, Fred M. Tatum, Bradley A. Judge, and John E. Mayfield  (1991)  "Deletion of the BCSP31 Gene of Brucella abortus by replacement."  Infect. Immun.  59:3863-3868.

35 Gary L. Lindberg, Carla M. Koehler, John E. Mayfield, Alan M. Myers, and Donald C. Beitz.  (1992)  Recovery of Mitochondrial DNA from Blood Leukocytes Using Detergent Lysis.  Biochem. Gen. 30:27-33.

36 M. M. Schutz, A. E. Freeman, D. C. Beitz, and J. E. Mayfield.  (1992)  The importance of maternal lineage on milk yield traits of dairy cattle.  J. Dairy Sci. 75:1331-1341.

37 Dennis Gor and John E. Mayfield.  (1992).  Cloning and nucleotide sequence of the Brucella abortus groE operon.  Bioch. Bioph. Acta. 1130:120-122.

38 Thomas J. Stabel, John E. Mayfield, David C. Morfitt, and Michael J. Wannemuehler.  (1993).  Oral immunization of mice and swine with an attenuated Salmonella choleraesuis cya/crp containing a recombinant plasmid.  Infect. Immun. 61:610-618.

39 Thomas J. Stabel, Zhengyu Sha and John Mayfield.  (1994).  Periplasmic location of Brucella abortus Cu/Zn Superoxide Dismutase.  Vet. Microbiol. 38:307-314.

40 Zhengyu Sha, Thomas J. Stabel, and John E. Mayfield.  (1994).  Brucella abortus catalase is a periplasmic protein lacking a standard signal sequence.  J. Bacteriol. 176:7375-7377.

41 John E. Mayfield and Mel Duvall. (1996) Anomalous phylogenies based on bacterial catalase gene sequences.   J. Molecular Evolution 42:469-471.

42 Jeonga Kim and John E. Mayfield. (1997) Brucella abortus arginase and ornithine cyclodeaminase genes are similar to Ti plasmid arginase and ornithine cyclodeaminase.  Biochimica et Biophysica Acta 1354:55-57.

43 Dan Ashlock and John E. Mayfield. (1998) Acquisition of General Adaptive Features by Evolution.  Evolutionary Programming VII. VW. Porto, N. Saravanan, D. Waagen, and AE. Eiben eds. Springer, Berlin. pp. 75-84..

44 Jeonga Kim, Zeng yu Sha, and John E. Mayfield. (2000) Regulation of Brucella abortus catalase.  Infect. Immun. 68:3861-3866.

45 Jeonga Kim and John Mayfield. (2000) Identification of Brucella abortus OxyR and Its Role in Control of Catalase Expression.  J. Bacterol. 182: 5631-5633.

46 John E. Mayfield. (in press) Evolution as Computation. Evolutionary Theory

47 John E. Mayfield (2007) Minimal History, a Theory of Plausible Explanation. Complexity 12 (in press)

 

c) Graduate Education Articles

1. “Student Crisis Management,” in the Proceedings of the 60th Annual Meeting of the Midwestern Association of Graduate Schools (2005).

2. “The Best Outcome is a Successful Career,” in the Proceedings of the 60th Annual Meeting of the Midwestern Association of Graduate Schools (2005).

3. “Integrated Multi-institutional Graduate Programs: Opportunities and Challenges Presented by the Internet,” in the International Journal of Innovation in Higher Education (2004)

4. “The Impact of Policy on Interdisciplinary Graduate Education at Iowa State University,” in Recruiting and Training Future Scientists: How Policy Shapes the Mission of Graduate Education, Merrill Advanced Studies Center, University of Kansas (2003).

5. “The Synergy Between Graduate and Undergraduate Education,” in the Proceedings of the 52nd Annual Meeting of the Midwestern Association of Graduate Schools (1996).

 

d) Book (in preparation)

The Engine of Complexity: A general theory of evolution.  Aprox. 300 pages with 80 illustrations.  Expected completion in 2008.

 

e) Patents

1.  Recombinant Brucella abortus Gene Expressing Immunogenic Protein.  Number:  5,023,174.  John E. Mayfield and Louisa B. Tabatabai.  (1991).

2.  Brucella abortus diagnostic Reagents.  Number:  5,188,936.  Louisa B. Tabatabai, John E. Mayfield, and Bonnie Beck. (1993).

 

Abstracts and Reports Given at Scientific Meetings

 

1  "Structural Studies on the Rod-Shaped Bacteriophage fd."  John E. Mayfield, Irwin J. Bendet and Max Lauffer.  Biophysical Society Abstracts 5, 100 (1965).

2  "Growth and Physical Properties of Bacteriophage fd."  John E. Mayfield and Irwin J. Bendet.  Western Pennsylvania Society of Microbiology (1966).

3  "Ultraviolet Dichroism of Flow Oriented Bacteriophage fd."  John E. Mayfield and Irwin Bendet.  Biophysical Society Abstracts 6, 65 (1966).

4  "Form Dichroism of Viruses in the Near Ultraviolet."  John E. Mayfield and Irwin J. Bendet.  Biophysical Society Abstracts 7, 55 (1967).

5  "A Technique for Making Flow Dichroism Quantitative."  John E. Mayfield and I. J. Bendet.  Biophysical Society Abstracts 10, 133a (1970).

6  "Rapidly Labeled Nuclear RNA is the Precursor of Chromosomal RNA."  John E. Mayfield, David S. Holmes and James Bonner.  Biophysical Society Abstracts 11, 151a.  (1971).

7  "Chromosomal RNA."  John E. Mayfield and James Bonner.  Gordon Research Conference on Developmental Biology.  (1971).

8  "The Organization of Interphase Heterochromatin in Drosophilidae."  John E. Mayfield and John R. Ellison.  J. Cell Biology 63, 211a.  (1974).

9  "Localization of Satellite DNA in Mouse Interphase Cells."  John R. Ellison and John E. Mayfield.  J. Cell Biology 67, 107a.  (1975).

10 "The Physical Organization of the Cow Genome as Determined by Electron Microscopy."  John E. Mayfield and Julie McKenna.  Biophysical Journal 17, 116a.  (1977).

11 "Analysis of Proteins from Fractionated Mouse Liver Nuclei."  James Bassuk and John E. Mayfield.  West Central States Biochemical Conference (1978).

12 "The High Mobility Group Proteins of Drosophila Embryo Nuclei."  James Bassuk and John E. Mayfield.  West Central States Biochemical Conference (1978).

13 "A Protein Released by DNAase I Digestion of Drosophila Nuclei is Preferentially Associated with Puffs."  Gordon Research Conference on Animal Cells and Viruses (1978).

14 "The HMG-Like Nuclear Proteins of Drosophila melanogaster."  James Bassuk and John E. Mayfield.  West Central States Biochemical Conference (1979).

15 "The HMG-like Chromosomal Proteins in Drosophila Embryonic Nuclei."  James Bassuk and John E. Mayfield.  Federation Proceedings 39, 2197 (1980).

16 "Properties of the HMG-like Chromosomal Proteins in Drosophila Embryonic Nuclei."  Federation Proceeding 40, 1570 (1981).  James Bassuk and John E. Mayfield.

17 "Molecular Characterization of the Short Interspersed Repeated DNA Sequences in the Bovine Genome."  Katherine Richardson and John E. Mayfield.  J. Cell Biology 95, 225a (1982).

18 "Characterization of Two Novel Non-histone Chromosomal Proteins from Drosophila melanogaster Embryonic Nuclei."  James A. Bassuk and John E. Mayfield.  Midwest Regional Developmental Biology Conference (1982).

19 "Two-dimensional Electrophoretic Analysis of Drosophila Nuclear Proteins."  James A. Bassuk and John E. Mayfield.  Midwest Regional Developmental Biology Conference (1982).

20 "Nucleosomal Proteins of Drosophila Embryos."  Federation Proceedings 42, 1958 (1983).  James A. Bassuk and John E. Mayfield.

21 "Sequence Homology Between Bovine Herpesvirus-1 and Bovine and Genomic DNA."  Federation Proceedings 43, 1558 (1984).  Deborah J. Shaw and John E. Mayfield.

22 "RNA polymerase III Transcripts of Alu-related Repeated Sequences in Bovine DNA."  John Furth and John E. Mayfield.  13th International Congress of Biochemistry (1985).

23 "The Alu-Related Repetitive Sequence Family in Bovine DNA."  R.M. Crosby and J.E. Mayfield.  J. Cell Biol. 101, 451a (1985).

24 "The Cloning of an Immunogenic Brucella abortus Proteins." John E. Mayfield, Renae M. Crosby, and Louisa B. Tabatabai.  Conference on Expression of Foreign Genes" (1985).

25 "The Cloning of Antigenic Brucella Surface Protein Genes in E. coli."  John E. Mayfield, E. Bricker and Louisa Tabatabai.  38th Annual Brucellosis Research Conference (1985).

26 "Studies of the Cellular Location of an Immunogenic Brucella abortus Protein Expressed in E. coli."  Weiqin Xie and John E. Mayfield, Mid-American Molecular Biology Colloquium (1986).

27 "Studies on Interspersed Repetitive Sequences in Bovine DNA."  D.S. Reading and J.E. Mayfield, Mid-America Molecular Biology Colloquium (1986).

28 "The Cloning and Expression of Brucella BCSP Genes in E. coli."  John E. Mayfield, Betsy Bricker, Weiqin Xie, and Lousia Tabatabai.  39th Annual Brucellosis Research Conference (1986).

29 "Expression and Purification of "BCS" Proteins from Recombinant E. coli Cells."  Betsy Bricker, Lousia Tabatabai, and John Mayfield.  39th Annual Brucellosis Research Conference (1986).

30  "Transcription from the Bovine Herpesvirus 1 (BHV-1) Genome During Latent Infection."  D.L. Rock, J.E. Mayfield, and F.A. Osorio. Am. Soc. Virol. Ann. Meeting (1986).

31  "Properties of Brucella abortus proteins expressed in E. coli."  Betsy Bricker, Louisa B. Tabatabai, Billy L. Deyoe, Weiqin Xie, and John E. Mayfield.  International Symposium on Virulence Mechanisms.  (1987)

32  "Evaluation of a rapid method for isolation of mitochondrial DNA."  C. M. Koehler, G. L. Lindberg, J. E. Mayfield, A. M. Meyers, A. E. Freeman, D. C. Beitz.  FASEB J. 2, A1127.  (1988).

33  "Status Report on the Cloning and Expression of Genes Coding for Soluble Brucella abortus Proteins."  John E. Mayfield.  41st Annual Brucellosis Research Conference.  (1988).

34  "Non-Immune Binding of Immunoglobulins from Various Animal Species to Brucella abortus." Louisa B. Tabatabai, and John E. Mayfield.  41st Annual Brucellosis Research Conference.  (1988).

35  "Partial Primary Structure of a Recombinant Mf 31,000 Protein of Brucella abortus by Simultaneous Internal Peptide Sequencing."  L. B. Tabatabai, B. L. Beck, and J. E. Mayfield.  Conference of Research Workers in Animal Disease.  (1988).

36  "Murine and Porcine Immune Responses to a 31 kDa Protein Cloned into Salmonella typhimurium X4064."  T. J. Stabel, J. E. Mayfield, M. J. Wannemuehler, and L. B. Tabatabai.  American Association of Immunologists.  (1989).

37  "A 20 Kilodalton Protein from Brucella abortus is a (Cu-Zn) Superoxide Dismutase."  B. L. Beck, L. B. Tabatabai and J. E. Mayfield.  Advances in Brucellosis Research:  An International Symposium (1989).

38  "Sequence Heterogeneity in Bovine Mitochondrial DNA Shown by Restriction Fragment Length Polymorphism Analysis."  C. M. Koehler, G. L. Lindberg, J. E. Mayfield, A. E. Freeman, and D. C. Betiz.  Joint Annual Meeting American Dairy Science Association and American Society of Animal Science.  (1989).

39  "Oral Immunization of Mice with Cloned BCSP31 Administered in Attenuated Salmonella typhimurium."  T. J. Stabel, M. J. Wannemuehler, L. B. Tabatabai, and J. E. Mayfield.  42nd Annual Brucellosis Resaerch Conference (1989).

40  "Genetic Engineering of Brucella abortus strain 19:  Construction of a Deletion Mutant."  S. M. Halling, B. L. Deyoe, B. Judge, and John Mayfield.  42nd Annual Brucellosis Research Conference (1989).

41  "Murine Immune Response to BCSP31 Cloned into Salmonella choleraesuis."
T. J. Stabel, J. E. Mayfield, L. B. Tabatabai, and M. J. Wannemuehler.  American Association of Immunologists (1990).

42  "Oral Immunization of BALB/c mice with Salmonella typhimurim AroA Mutant Carrying the Brucella abortus Cu-Zn Superoxide Dismutase Gene."  Carol Belzer, Lousia B. Tabatabai, and John E. Mayfield.  FASEB J. 4:A1797 (1990).

43  "Nucleotide sequence heterogeneity in the displacement loop region of mitochondrial DNA from different breeds of dairy cattle."  S. D. Johnston, G. L. Lindberg, C. M. Koehler, A. E. Freeman, J. E. Mayfield, A. M. Myers, and D. C. Beitz.  FASEB J. 4:A1167 (1990).

44  "Murine and porcine immune responses to a 31 kDa Brucella abortus protein cloned into S. choleraesuis X3781."  T. J. Stabel, J. E. Mayfield, L. B. Tabatabai, and M. J. Wannemuehler.  CRWAD (1990).

45  "Cloning, sequencing, and exprsesion of Brucella abortus heat shock and Cu-Zn superoxide dismatase genes."  J. E. Mayfield, E. Chin, D. Gor.  43rd Annual Brucellosis Research Conference (1990).

46  "Association of production with sequence differences in bovine mitochondrial DNA."  M. M. Schutz, A. E. Freeman, F. L. Lindberg, C. M. Koehler, A. M. Myers, J. E. Mayfield, and D. C. Beitz.  Annual Meeting, American Dairy Science Association (1991).

47  "Purification and characterization of catalase from Brucella abortus.  Z. Sha, John E. Mayfield, and Tom Stabel.  West Central States Biochemistry Conference (1991).

48  "Homologs to the GroE structural genes in Brucella.  Dennis Gor and John Mayfield.  West Central States Biochemistry Conference (1991).

49  "Purification and characterization of catalase from Brucella abortus.  Z. Sha, John E. Mayfield and Tom Stabel.  44th Annual Brucellosis Research Conference (1991).

50  "Homologs to the GroE structural genes in Brucella.  Dennis Gor and John Mayfield.  44th Annual Brucellosis Research Conference (1991).

51  "Intracellular localization of Brucella abortus Cu/Zn superoxide dismutase."  Thomas J. Stabel, Zhengyu Sha, and John Mayfield.  44th Annual Brucellosis Research Conference (1991).

52  "Safety assessment of Salmonella typhimurium live vectored vaccines."  L. M. Henderson, N. E. Coe, J. E. Mayfield, R. Curtiss, III, L. K. Schlater.  Meeting on Vaccines for Enteric Diseases, Surrey, England (1992).

53  "A method for the release of periplasmic protein from Brucella abortus."  Thomas J. Stabel, Z. Sha, and J. E. Mayfield.  Ann. Soc. Microbiol. Annual Meeting (1992).

54  "The Brucella abortus catalase gene." Z. Sha and J. E. Mayfield. 45th Annual Brucellosis Research Conference (1992).

55.  "Analysis of the in vitro macrophage killing of Salmonella typhimurium using flow cytometry." P. Meyer, J.E.Mayfield, K.R. Harkins.  American Society for Microbiology, Midwest Section Meeting (1993).

56.  "Computers in Biology at Iowa State." J.E. Mayfield and W.D. Dolphin.  Wind River Conference on Prokaryotic Biology, Estes Park, Co. (1994).

57.  "Does a Periplasmic Defence System Protect Brucella abortus from Phagocyte Oxidative Attack?" J.E. Mayfield, Z. Sha, and J. Kim.  Wind River Conference on Prokaryotic Biology, Estes Park, Co. (1994).

58.  "Cloning the catalase gene from Brucella abortus." Zhengyu Sha and John E. Mayfield.  Society for Industrial Microbiology, Annual Meeting (1994).

59.  "Role of a 60kDa GroEL heat shock protein in inducing protective immunity in mice given Brucella abortus strain 19 or RB51. M.G. Stevens, S.C. Olsen, G.W. Pugh Jr., and J.E. Mayfield.  75th Conference of Research Workers in Animal Diseases. (1994).

60.  "Immune response of mice challenged with Brucella abortus strain 2308 after oral vaccination with attenuated Salmonella typhimurium expressing Brucella GroEL".  E.M. Steadham, R.A. Kunkle, J.E.Mayfield, and N.F. Cheville.  Conference of Research Workers in Animal Disease (1995).

61.  "Evolution as Computation". J.E.Mayfield. International Conference on Complex Systems, Nashua New Hampshire, 2002.

62.  “Minimal History, a theory of plausible explanation.” J.E. Mayfield. Symposium on Understanding Complex Systems. University of Illinois at Urbana-Champaign, May 2005.

63.  “Evolution as Computation.” J.E. Mayfield.  Symposium on Understanding Complex Systems.  University of Illinois at Urbana-Champaign, May 2006