The Journal of Experimental Medicine, Vol 35, 661-666,
Copyright, 1922, by The Rockefeller Institute for Medical Research New York
ACTION OF ANTIGEN ON FIBROBLASTS IN VITRO
Albert Fischer M.D.1
1 From the Laboratories of The Rockefeller Institute for Medical Research.
It may be concluded that, under the conditions of the experiments:
1. A small amount of foreign protein added to the culture medium does not modify the rate of proliferation of fibroblasts.
2. A large amount of foreign protein added to the culture medium decreases markedly the rate of proliferation of fibroblasts cultivated previously in homogenic medium, while it does not decrease the rate of proliferation of fibroblasts cultivated previously in the presence of a small amount of the foreign protein.
3. Fibroblasts in vitro respond to the presence of an antigen in the culture medium by becoming immunized against its action.
Submitted on January 3, 1922