Attempts to establish “actively acquired tolerance” to homologous and heterologous tumors have been described. Some measure of success was obtained with homologous transplants; no effect was demonstrated with heterologous grafts.
Some of the reasons for failure are discussed, and possible methods of improving the results are considered.
Supported by a grant-in-aid from the National Cancer Institute of Canada.
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©1956 American Association for Cancer Research.
Cancer Research, Inc.