摘要: There are an estimated 40 million pet cats in the United States and approximately 2%, or 1 cats, infected with feline leukemia virus (FeLV) (1). The is spread contagiously among most frequent killer of infectious disease microorganisms (1–4). FeLV causes both proliferative (neoplastic) degenerative (blastopenic) diseases living household conditions (2,3). More FeLV-infected develop than neoplastic Of all retroviruses, biology has been completely elucidated.