Howard C J, Gourlay R N, Thomas L H, Stott E J
Res Vet Sci. 1976 Sep;21(2):227-31.
Cloned cultures of Mycoplasma dispar and of Ureaplasma sp were inoculated endobronchially into gnotobiotic calves. The resulting pneumonia was estimated to involve 2 to 10 per cent of the lung although no clinical signs were observed. The histopathological lesions consisted of infiltration with mononuclear cells, cuffing (peribronchiolar lympho-reticular hyperplasia), catarrhal bronchiolitis and atelectasis. The results indicate that both M dispar and Ureaplasma sp are capable of causing sub-clinical cuffing pneumonia in calves.
将支原体属和脲原体属的克隆培养物经支气管内接种到无菌犊牛体内。尽管未观察到临床症状，但估计由此导致的肺炎累及2%至10%的肺组织。组织病理学损伤包括单核细胞浸润、套袖状改变（支气管周围淋巴网状组织增生）、卡他性细支气管炎和肺不张。结果表明，支原体属和脲原体属均能在犊牛中引起亚临床套袖状肺炎。
