"The most important basic medical discovery of the present
generation"; so one scientist called it. He referred to the
theory that mice may get cancer from a virus in their mothers' milk.*
This was reported in Science last week by Geneticist John Joseph
Bittner, of the Jackson Memorial Laboratory in Bar Harbor, Me., where
scientists have worked on this problem for more than seven years.
Dr. Bittner used two families of mice; in Family A, almost all the mice
for many generations developed cancer of the breast; in Family B,
cancer seldom occurred. Dr.
Bittner took a number of newborn mice from...
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