Abstract

Immunization of CBAT6T6 mice with MC-29 hepatoma antigen did not change the take of Rous sarcoma virus, Schmidt-Ruppin strain [RSV(SR)] mouse tumors after sc transplantation. Immunization with MC-29 hepatoma antigen only slightly increased the average survival time of the mice and significantly decreased tumor growth only at the minimal lethal dose level. Immunization of mice with MC-29 hepatoma antigen and immunization with chicken Rous sarcoma gave similar results; both elicited much less transplantation resistance than immunization with irradiated RSV(SR) mouse tumor cells. The data indicate that there are common tumor-specific transplantation antigens of MC-29 hepatoma and Rouse sarcoma, but further in vitro experiments are needed to prove this.

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