Retroviruses (Retroviridae) — a family of viruses that includes pathogens such as HIV, feline leukemia, and several cancer-causing viruses — have an ancient marine origin and originated together with, if not before, their jawed vertebrate hosts nearly 450 million years ago in the Ordovician period, according to a new study …
Read More »Retroviruses Originated in Ocean 450 Million Years Ago, New Study Says
