Recovery of murine leukemia virus prior to development of leukemia: growth curve and dose response.

Murine leukemia virus, isolated from Ha/ICR Swiss mice during the course of experiments which originated with assay of human leukemias and tumors for the presence of oncogenic agents, was recovered within 1—2weeks from organs of mice in jected at birth with cell-free filtrates from leukemic tissues. The incidences of leukemia induced by filtrates made… (More)