خيارات البحث
النتائج 1 - 10 من 217
Repeated physical and cytologic characterizations of subcutaneous postvaccinal reactions in cats.
1997
Schultze A.E. | Frank L.A. | Hahn K.A.
Immune response of cattle to Haemophilus somnus lipid A-protein conjugate vaccine and efficacy in a mouse abortion model.
1992
Inzana T.J. | Todd J.
Immunogenicity of the lipid A component of Haemophilus somnus lipooligosaccharide in cattle and mice was examined after purification, detoxification, and covalent conjugation to a protein carrier. After 2 inoculations, a substantial antibody response was induced in most cattle to lipid A and the protein carrier. To determine whether antibodies to lipid A would be protective, 5 X 10(7) colony-forming units of H somnus strain 649 were administered IV to endotoxin-responsive (C3H/HEN) mice. In one study, 8 of 13 C3H/HEN mice aborted when inoculated. In contrast, abortion did not result when mice were inoculated with the same dose of an isolate of H somnus normally found in the prepuce or with the rough mutant Escherichia coli J5. In addition, endotoxin-nonresponsive (C3H/HeJ) mice were significantly (P = 0.03) more resistant to abortion by strain 649 than were C3H/HeN mice, but inoculated C3H/HeN mice were only slightly more resistant to H somnus abortion, compared with control mice. Although a large antibody response to lipid A was detected, there was no significant difference in the immunized group between mice that aborted and mice that delivered normally. Thus, lipooligosaccharide and other properties of virulent H somnus strains may contribute to abortion in mice.
اظهر المزيد [+] اقل [-]Infertility in heifers inoculated with modified-live bovine herpesvirus-1 vaccinal strains against infectious bovine rhinotracheitis on postbreeding day 14.
1989
Miller J.M. | Maaten M.J. van der | Whetstone C.A.
Heifers were inoculated IV with 1 of 4 modified-live bovine herpesvirus-1 vaccinal strains against infectious bovine rhinotracheitis (2 heifers/strain) on postbreeding day (PBD) 14. The effect of infection on fertility was monitored by plasma progesterone assay at 1- to 3-day intervals from the time of virus exposure until PBD 60. Infertility was detected in 4 of 8 inoculated heifers. In 2 heifers, progestrone concentrations decreased to values indicative of estrus within 10 days after inoculation (PBD 24). The 2 other heifers had evidence of embryonic death on PBD 40 and 42. Two control heifers inoculated with culture medium from noninfected cells maintained their pregnancies.
اظهر المزيد [+] اقل [-]Safety of a temperature-sensitive vaccine strain of bovine viral diarrhea virus in pregnant cows.
1986
Lobmann M. | Charlier P. | Klaassen C.L. | Zygraich N.
Efficacy of Corynebacterium pseudotuberculosis bacterin for the immunologic protection of sheep against development of caseous lymphadenitis.
1987
LeaMaster B.R. | Shen D.T. | Gorham J.R. | Leathers C.W. | Wells H.D.
Efficacy of a streptomycin-dependent, live Pasteurella haemolytica vaccine against challenge exposure to Pasteurella haemolytica in cattle.
1987
Blanchard Channell M.T. | Ashfaq M.K. | Kadel W.L.
Second-generation pseudorabies virus vaccine with deletions in thymidine kinase and glycoprotein genes.
1987
Kit S. | Sheppard M. | Ichimura H. | Kit M.
Use of a toxoid vaccine to protect goats against intradermal challenge exposure to Corynebacterium pseudotuberculosis.
1986
Brown C.C. | Olander H.J. | Biberstein E.L. | Morse S.M.
Mortality in swine herds endemically infected with Haemophilus pleuropneumoniae: effect of immunization with cross-reacting lipopolysaccharide core antigens of Escherichia coli.
1986
Fenwick B.W. | Osburn B.I. | Cullor J.S. | Henry S.C. | Olander H.I.
Vaccination of cattle against ringworm caused by Trichophyton verrucosum.
1986
Gudding R. | Naess B.
