Abstract
Summary
1. A method has been developed for testing chemicals against the secondary metastatic foci of the mammary tumor. 2. Five compounds were found to be active in inhibiting the development of metastatic foci. N,N′,N—Tris (1-methylethylene) phosphor-amide and N,N′,N″-Triethylenethiophosphor-amide were most active whereas the others are only moderately so.
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