Introduction
In the early 1900s, cell-free filtrates were used to spread some types of animal cancers, establishing the possibility of an infectious etiology of carcinogenesis. Multiple studies have shown that retroviruses are responsible for…

In the early 1900s, cell-free filtrates were used to spread some types of animal cancers, establishing the possibility of an infectious etiology of carcinogenesis. Multiple studies have shown that retroviruses are responsible for…