Watson E D
Section of Reproductive Studies, University of Pennsylvania, School of Veterinary Medicine, Kennett Square 19348.
Res Vet Sci. 1989 Sep;47(2):253-6.
Milk samples were collected from 21 non-pregnant cows to study the ability of milk whey to support in vitro bactericidal activity of neutrophils against Actinomyces pyogenes. Significant differences (P less than 0.01) existed in opsonising ability of milk whey samples from individual cows. Antibody titres to A pyogenes in milk whey were determined using an enzyme linked immunosorbent assay. Bactericidal activity of neutrophils incubated with milk whey was positively correlated (P less than 0.05) with titres of IgG2 and IgM antibodies but not with IgG1 or IgA antibodies.
采集了21头未怀孕奶牛的乳样，以研究乳清支持中性粒细胞对化脓放线菌体外杀菌活性的能力。各奶牛乳清样品的调理能力存在显著差异（P<0.01）。采用酶联免疫吸附测定法测定乳清中抗化脓放线菌的抗体滴度。与乳清一起孵育的中性粒细胞的杀菌活性与IgG2和IgM抗体滴度呈正相关（P<0.05），但与IgG1或IgA抗体无关。
