| 1. | Sheep pulmonary adenomatosis ( spa ) is a contagious and experimentally transmissible lung cancer of sheep resembling human bronchiolo - alveolar carcinoma , spa is a nature animal model in study of bac . a type d retrovirus , known as jaagiekte sheep retrovirus ( jsrv ) , has been associated with the etiology of , spa
绵羊肺腺瘤病( sheeppulmonaryadenomatosisspa )是一种传染性肺癌，并可实验复制。 spa与人的支气管上皮细胞癌( bronchioloalveolarcarcinomabac )极为相似，是研究bac的天然动物模型。 |
