The Journal of Experimental Medicine, Vol 54, 493-498,
Copyright, 1931, by The Rockefeller Institute for Medical Research New York
THE EFFECT OF TESTICLE EXTRACT AND OF NORMAL SERUM ON A TRANSPLANTABLE EPITHELIAL TUMOR OF THE RABBIT
F. Duran-Reynals M.D.1
1 From the Laboratories of The Rockefeller Institute for Medical Research
Extract of rat, rabbit or bull testicle prevents or retards the growth of a rabbit tumor when a mixture of the extract and a tumor cell suspension is inoculated intradermally. Similar mixtures, made with normal rabbit serum instead of testicle extract, give rise to tumors which grow with unusual rapidity. The results are the opposite of those obtained with pathogenic bacteria or filtrable viruses which are enhanced by testicle extract and generally inhibited by normal serum.
Submitted on June 22, 1931