Ovine pulmonary adenocarcinoma as an animal model for human lung cancer, because OPA is histologically similar to human adenocarcinoma in situ of the lung. Dolly the sheep, the first mammal successfully cloned from an adult somatic cell, was euthanized after it was confirmed that she had OPA. Ovine pulmonary adenocarcinoma Ovine pulmonary adenocarcinoma (OPA), also known as ovine pulmonary adenomatosis, or jaagsiekte, is a chronic and contagious disease of the lungs of sheep and goats. OPA is caused by a retrovirus called jaagsiekte sheep retrovirus (JSRV). The disease has a long incubation period, and therefore signs usually occur in adult animals (over 2
Funny animal Funny animal A funny animal is an anthropomorphic animal character who lives like a human. Funny animals typically are bipedal, wear clothes, live in houses, drive and ride vehicles, and have jobs or may even be recognized citizens of countries, which distinguish them from other animal characters who may nonetheless display anthropomorphic characteristics such as speaking or showing facial expressions. Funny animal (also talking animal) is also the genre of comics and animated cartoons which primarily feature funny animals. While many funny animal stories are light-hearted and humorous, the genre is not exclusively comedic. Dark or serious stories featuring characters