McNulty M S, Bryson D G, Allan G M, Logan E F
Vet Microbiol. 1984 Sep;9(5):425-34. doi: 10.1016/0378-1135(84)90063-4.
Two viruses, morphologically resembling coronaviruses and antigenically indistinguishable from bovine enteric coronavirus, were isolated in bovine tracheal organ cultures from the lungs and trachea of young calves with respiratory disease. Intranasal and intratracheal inoculation of these viruses into neonatal calves resulted in a predominantly upper respiratory tract infection, which was associated with the development of mild respiratory symptoms.
从患有呼吸道疾病的幼龄犊牛的肺和气管中,在牛气管器官培养物中分离出两种病毒,它们在形态上类似于冠状病毒,在抗原性上与牛肠道冠状病毒无法区分。将这些病毒经鼻内和气管内接种到新生犊牛中,导致主要为上呼吸道感染,并伴有轻度呼吸道症状的出现。