38 



Gregory Pincus and Anne P. Merrill 



)H OH 



CHtO 



H0-" "^-^ ^^^ n 



SO-10,2,0.4 



SQ-10,2 



SQ- 10,2, 0.4 



OOCCH, 



CH.COO 



CH,COO 



SQ~I0,2 

 Fig. 1. Estrogens and derivatives. (Dosage in milligrams. SQ = subcutaneous injection; 



O = by gavage.) 



SQ-jO ,I0,5J 



CH3O' 



CH,0 



SQ-iO SQ-10,2 



Fig. 2. Estrogens and derivatives. (Dosage in milligrams. SQ = subcutaneous injection; 



O = by gavage.) 



