Abstract
Summary
1. When one rat of a parabiotic pair was partially hepatectomized, the unoperated liver of its partner increased in wet weight and in the number of hepatic cells. The growth stimulus causing this hypertrophy of liver tissue must have been a factor carried in the blood from the operated animal to the unoperated liver, and the latter responded to this stimulus just as does an operated liver.
2. No significant difference was observed between the rates of regeneration of livers in lobectomized parabions and in lobectomized single animals.
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