[Antitumoral immunity induced by the administration of homologous and isologous tumoral cells treated by moderate heating].

Treatment of tumour cells with heat ranging between 46 and 52 degrees C attenuates strongly their virulence and renders the tumour cells immunogenic to the host. By repeated administration of heat treated tumour cells suspended in Freund's complete adjuvant, the animals acquire a state of immunity which makes them tolerant to tumour inocula 100% lethal in the controls. The immunity so conferred is cell-mediated and can be adoptively transferred to isogenic recipients with donor peritoneal exudate and, to a lesser degree, splenic cells.