title: Changes in peripheral leukocyte populations of weak calf syndrome of Japanese black calves.
abstract: To clarify the cellular immune condition in Japanese Black (JB) calves with a weak syndrome, peripheral leukocyte populations were analyzed by flow cytometry. Twenty JB calves were divided into two groups based on clinical observations; one group of calves was weak, because they had experienced an onset of diarrhea within 3 days after birth and needed treatment (Group 1 ;n=10), and the other group of calves was healthy (Group 2; n=10). With regard to leukocyte populations, CD8(+) cells and gamma delta T cells in Group 1 were markedly lower than those in Group 2 during the experimental periods. It is possible that immune-insufficiency might be based on T lymphocyte function in weak syndrome JB calves during the growth process.
authors.affiliation: Department of Veterinary Internal Medicine, School of Veterinary Medicine and Animal Sciences, Kitasato University, Towada, Aomori, Japan.
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Ohtsuka
authors.forename: Narumi
authors.initials: N
authors.lastname: Fukunaga
authors.forename: Hidefumi
authors.initials: H
authors.lastname: Hara
authors.forename: Sigeo
authors.initials: S
authors.lastname: Fukuda
authors.forename: Tomohito
authors.initials: T
authors.lastname: Hayashi
authors.forename: Fumio
authors.initials: F
authors.lastname: Hoshi
authors.forename: Tomo-o
authors.initials: TO
authors.lastname: Yoshino
authors.forename: Masateru
authors.initials: M
authors.lastname: Koiwa
authors.forename: Seiichi
authors.initials: S
authors.lastname: Kawamura
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D002417:Cattle; D002418:Cattle Diseases / Q000097:blood / Q000276:immunology*; D003967:Diarrhea / Q000276:immunology / Q000662:veterinary; D007958:Leukocyte Count; D007962:Leukocytes / Q000145:classification / Q000166:cytology / Q000276:immunology*; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000378:metabolism
chemical_list: D016692:Receptors, Antigen, T-Cell, gamma-delta