*
Because of the difficulties of international communication the authors have not read proof of this article.
†
This investigation has been aided by a grant from The Jane Coffin Childs Memorial Fund for Medical Research, and the Rockefeller Foundation. Alpha-estradiol was generously supplied by Dr. Karl Miescher and Dr. C. Oppenheimer, of Ciba Pharmaceutical Products. Progesterone was obtained through the kindness of Dr. M. Tausk, of Organon, Holland.
This content is only available via PDF.
©1944 American Association for Cancer Research.
1944
The International Cancer Research Foundation