Wassink L A, Franssen F F, Uilenberg G
Res Vet Sci. 1986 Jul;41(1):98-101.
Starting from a stabilate of caprine blood infected with the Kwanyanga stock of Cowdria ruminantium, eight serial passages were made in groups of mice, and eight parallel serial passages in goats. Cross-immunity tests in goats and mice failed to demonstrate any difference between stabilates made after the eighth passage. The Kwanyanga stock was of exceptionally low virulence for Dutch goats.
从感染了反刍兽考德里氏体夸延加毒株的山羊血液稳定株开始，在小鼠组中进行了8次连续传代，并在山羊中进行了8次平行连续传代。在山羊和小鼠中进行的交叉免疫试验未能显示出第八代后制备的稳定株之间有任何差异。夸延加毒株对荷兰山羊的毒力极低。
