Abstract
Summary
Bovine growth hormone stimulates the progression of rat thymocytes (maintained in vitro) into mitosis. The myogenic capacity of growth hormone is considerably increased by caffeine which suggests that the hormonal action is mediated by adenosine 3′5′-monophosphate. In support of this suggestion, it is shown that cyclic AMP has the necessary ability to strongly stimulate mitotic activity in thymocyte populations.
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