Failure to detect chromosome damage in vivo in Friend virus-infected leukemic mice.

The cytogenetic activity of Friend virus (FV) was tested in vivo on spleen and bone marrow cells of FV-infected leukemic C3H/HeJ and STS mice. No specific chromosome rearrangements were detected in the infected animals. Some chromosome abnormalities were recorded in both normal and diseased animals; however, aberrations did not significantly increase in the leukemic groups.