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ARS Home » Midwest Area » Ames, Iowa » National Animal Disease Center » Research Program Support » People & Locations » Samuel Humphrey
Samuel Humphrey
Research Program Support
Microbiologist

Phone: (515) 337-7495
Fax:

1920 DAYTON AVE
AMES, IA 50010

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Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Short communication: Lymphocyte proliferative responses in cattle naturally infected with digital dermatitis consists of CD8+ and gamma delta T cells but lack CD4+ T cells Reprint Icon - (Peer Reviewed Journal)
Wilson-Welder, J.H., Nally, J.E., Alt, D.P., Humphrey, S.B., Olsen, S.C. 2018. Short communication: Lymphocyte proliferative responses in cattle naturally infected with digital dermatitis consists of CD8plus and gamma delta T cells but lack CD4plus T cells. Journal of Dairy Science. 101(9):8301-8307. https://doi.org/10.3168/jds.2017-13913.
Butyricicoccus porcorum sp. nov. a butyrate-producing bacterium from swine intestinal tract Reprint Icon - (Peer Reviewed Journal)
Trachsel, J., Humphrey, S.B., Allen, H.K. 2018. Butyricicoccus porcorum sp. nov. a butyrate-producing bacterium from swine intestinal tract. International Journal of Systematic and Evolutionary Microbiology. 68:1737-1742. https://doi.org/10.1099/ijsem.0.002738.
Morphological changes in cultured bovine lymphoid cell lines associated with bovine viral diarrhea virus (BVDV) single and dual infections with bovine leukemia virus (BLV) - (Abstract Only)
Gamma delta T cells are early responders to Mycobacterium avium subsp. paratuberculosis in colostrum-replete Holstein calves - (Peer Reviewed Journal)
Krueger, L.A., Beitz, D.C., Humphrey, S.B., Stabel, J.R. 2016. Gamma delta T cells are early responders to Mycobacterium avium subsp. paratuberculosis in colostrum-replete Holstein calves. Journal of Dairy Science. 99(11):9040-9050. doi: 10.3168/jds.2016-11144.
Cellular responses to Mycobacterium avium, subsp. paratuberculosis in colostrum-deprived and colostrum-replete holstein calves supplemented with fat-soluble vitamins - (Abstract Only)
Kruger, L.A., Beitz, D.C., Humphrey, S.B., Stabel, J.R. 2016. Cellular responses to Mycobacterium avium, subsp. paratuberculosis in colostrum-deprived and colostrum-replete holstein calves supplemented with fat-soluble vitamins. Meeting Abstract. Kruger, L.A., Beitz, D.C., Humphrey, S.B., Stabel, J. 2016. 13th International Colloquium on Paratuberculosis. p. 41.
Antibiotics in feed induce prophages in swine fecal microbiomes - (Peer Reviewed Journal)
Allen, H.K., Looft, T.P., Bayles, D.O., Humphrey, S.B., Levine, U.Y., Alt, D.P., Stanton, T.B. 2011. Antibiotics in feed induce prophages in swine fecal microbiomes. mBio [serial online]. 2(6). Available: http://mbio.asm.org/content/2/6/e00260-11.
The persistence of antibiotic resistance: evaluation of a probiotic approach using antibiotic-sensitive M. elsdenii strains to prevent colonization of swine by antibiotic-resistant strains - (Peer Reviewed Journal)
Stanton, T.B., Humphrey, S.B. 2011. Persistence of antibiotic resistance: evaluation of a probiotic approach using antibiotic-sensitive M. elsdenii strains to prevent colonization of swine by antibiotic-resistant strains. Applied and Environmental Microbiology. 77(20):7158-7166.
Chlortetracycline - resistant intestinal bacteria in organically-raised and feral swine - (Peer Reviewed Journal)
Stanton, T.B., Humphrey, S.B., Stoffregen, W.C. 2011. Chlortetracycline - resistant intestinal bacteria in organically-raised and feral swine. Applied and Environmental Microbiology. 77(20):7167-7170.
Diverse Phage in the Swine Intestine - (Abstract Only)
Characteristics and Induction of VSH-1, Gene Transfer Agent of B. hyodysenteriae - (Abstract Only)
Stanton, T.B., Humphrey, S.B., Zuerner, R.L. 2009. Characteristics and Induction of VSH-1, Gene Transfer Agent of B. hyodysenteriae [abstract]. In: Proceedings of 5th International Conference on Colonic Spirochaetal Infections in Animals and Humans, June 8-10, 2009, Leon, Spain. p.25-26.
Identification of a Divided Genome for VSH-1, the Prophage-Like Gene Transfer Agent of Brachyspira hyodysenteriae - (Peer Reviewed Journal)
Stanton, T.B., Humphrey, S.B., Bayles, D.O., Zuerner, R.L. 2008. Identification of a Divided Genome for VSH-1, the Prophage-Like Gene Transfer Agent of Brachyspira hyodysenteriae. Journal of Bacteriology. 191(5):1719-1721.
COLLATERAL EFFECTS OF ANTIBIOTICS - CARBADOX AND METRONIDAZOLE INDUCE VSH-1 AND FACILITATE GENE TRANSFER AMONG BRACHYSPIRA HYODYSENTERIAE STRAINS - (Peer Reviewed Journal)
Stanton, T.B., Humphrey, S.B., Sharma, V.K., Zuerner, R.L. 2008. Collateral effects of antibiotics - carbadox and metronidazole induce VSH-1 and facilitate gene transfer among Brachyspira hyodysenteriae strains. Applied and Environmental Microbiology. 74(10):2950-2956.
ANTIMICROBIAL COLLATERAL EFFECTS: INDUCTION OF THE PROPHAGE-LIKE, GENE TRANSFER AGENT VSH-1 IN CULTURES OF THE SWINE PATHOGEN BRACHYPSIRA HYODYSENTERIAE - (Abstract Only)
Stanton, T.B., Sharma, V.K., Humphrey, S.B., Zuerner, R.L. 2006. Antimicrobial collateral effects: Induction of the prophage-like, gene transfer agent VSH-1 in cultures of the swine pathogen Brachypsira hyodysenteriae [abstract]. American Society for Microbiology. May 20-26, 2006, Orlando, Florida. 2006 CDROM.
IDENTIFICATION OF GENES OF VSH-1, A PROPHAGE-LIKE GENE TRANSFER AGENT OF BRACHYSPIRA HYODYSENTERIAE - (Peer Reviewed Journal)
Matson, E.G., Thompson, M., Humphrey, S.B., Zuerner, R.L., Stanton, T.B. 2005. Identification of genes of VSH-1, a prophage-like gene transfer agent of Brachyspira hyodysenteriae. Journal of Bacteriology. 187(17):5885-5892.
VSH-1, A PROPHAGE-LIKE, GENE TRANSFER AGENT OF BRACHYSPIRA HYODYSENTERIAE AND (PROBABLY) OF OTHER BRACHYSPIRA SPECIES - (Abstract Only)
Stanton, T.B., Matson, E.G., Humphrey, S.B., Zuerner, R.L., Sharma, V.K. 2005. VSH-1, a prophage-like, gene transfer agent of Brachyspira hyodysenteriae and (probably) of other Brachyspira species [abstract]. Third International Conference on Colonic Spirochaetal Infections in Animals and Humans. p. 15-16.
HYBRID TET GENES AND TET GENE NONMENCLATURE - REQUEST FOR OPINION - (Peer Reviewed Journal)
Stanton, T.B., Humphrey, S.B., Scott, K.P., Flint, H.J. 2005. Hybrid tet genes and tet gene nonmenclature - request for opinion. Antimicrobial Agents and Chemotherapy. 49(3):1265-1266.
CHARACTERISTICS OF VSH-1 GENE TRANSCRIPTION IN BRACHYSPIRA HYODYSENTERIAE - (Abstract Only)
MATSON, E.G., HUMPHREY, S.B., ZUERNER, R.L., STANTON, T.B. CHARACTERISTICS OF VSH-1 GENE TRANSCRIPTION IN BRACHYSPIRA HYODYSENTERIAE. PROCEEDINGS OF THE GORDON RESEARCH CONFERENCE. 2004. P. 2.
DETECTION OF BACTERIOPHAGE VSH-1 SVP38 GENE IN BRACHYSPIRA SPIROCHETES - (Peer Reviewed Journal)
STANTON, T.B., THOMPSON, M.G., HUMPHREY, S.B., ZUERNER, R.L. DETECTION OF BACTERIOPHAGE VSH-1 SVP38 GENE IN BRACHYSPIRA SPIROCHETES. FEDERATION OF EUROPEAN MICROBIOLOGICAL SOCIETIES MICROBIOLOGY LETTERS. 2003. V. 224. P. 225-229.
ISOLATION OF TETRACYCLINE-RESISTANT MEGASPHAERA ELSDENII STRAINS WITH NOVEL MOSAIC GENE COMBINATIONS OF TET(O) AND TET(W) FROM SWINE - (Peer Reviewed Journal)
STANTON, T.B., HUMPHREY, S.B. ISOLATION OF TETRACYCLINE-RESISTANT MEGASPHAERA ELSDENII STRAINS WITH NOVEL MOSAIC GENE COMBINATIONS OF TET(O) AND TET(W) FROM SWINE. APPLIED AND ENVIRONMENTAL MICROBIOLOGY. 2003. V. 69. P. 3874-3882.
UNUSUAL TETRACYCLINE RESISTANCE IN MEGASPHAERA ELSDENII STRAINS FROM SWINE CECAL CONTENTS - (Abstract Only)
Stanton, T.B., Humphrey, S.B. 2002. Unusual tetracycline resistance in megasphaera elsdenii strains from swine cecal contents [abstract]. American Society for Microbiology. p. 515.
IDENTIFICATION OF BACTERIOPHAGE VSH-1 GENES AND ANALYSIS OF THEIR INDUCTION OF BRACHYSPIRA HYODYSENTERIAE - (Abstract Only)
Matson, E.G., Humphrey, S.B., Thompson, M.G., Stanton, T.B. 2002. Identification of bacteriophage vsh-1 genes and analysis of their induction of brachyspira hyodysenteriae [abstract]. American Society for Microbiology. p. 179.
VSH-1, A GENERALIZED TRANSDUCING BACTERIOPHAGE OF THE ANAEROBIC SPIROCHETE BRACHYSPIRA HYODYSENTERIAE, APPEARS DEFECTIVE IN SELF-REPLICATION - (Abstract Only)
BRACHYSPIRA (SERPULINA) HYODYSENTERIAE GYRB MUTANTS AND INTERSTRAIN TRANSFER OF COUMERMYCIN A1 RESISTANCE - (Peer Reviewed Journal)
BRACHYSPIRA (SERPULINA) HYODYSENTERIAE GYRB MUTANTS AND INTERCELLULAR TRANSFER OF COUMERMYCIN RESISTANCE - (Abstract Only)
IDENTIFYING GENES OF VSH-1, A NOVEL GENE TRANSFER AGENT OF THE ENTEROPATHOGENIC SPIROCHETE S. HYODYSENTERIAE - (Abstract Only)
BIG FLEAS HAVE LITTLE FLEAS? VSH-1, AN UNUSUAL BACTERIOPHAGE OF SERPULINA HYODYSENTERIAE (AUSTRALIAN SOCIETY FOR MICROBIOLOGY MTG.) - (Abstract Only)
IDENTIFICATION OF GENES ENCODING VIRION-ASSOCIATED PROTEINS OF VSH-1, A BACTERIOPHAGE OF SERPULINA HYODYSENTERIAE - (Abstract Only)
PURIFICATION AND CHARACTERIZATION OF VSH-1, A GENERALIZED TRANSDUCING BACTERIOPHAGE OF SERPULINA HYODYSENTERIAE - (Peer Reviewed Journal)
VSH-1, A BACTERIOPHAGE-LIKE GENE VECTOR FOR SERPULINA HYODYSENTERIAE - (Proceedings)
MITOMYCIN C INDUCTION OF BACTERIOPHAGES FROM SERPULINA HYODYSENTERIAE AND SERPULINA INNOCENS - (Peer Reviewed Journal)