Differential early experiences and susceptibility to transplanted tumor in the rat.

Abstract
Spraque-Dawley rats were exposed to handling, electric shock, or neither during the 1st, 2nd, or 3rd week of life, or throughout the preweaning period. At 60 days, Ss were inoculated with a suspension of Walker 256 car-cinosarcoma. Responses to the tumor transplant were influenced by the period of life during which manipulation occurred, by the dependent measurement involved, and by the particular kind of manipulation experienced during early life.

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