title: [3d and final discourse on the new interpretation of the problem of tumors].
mesh_terms: D000818:Animals; D000937:Antigen-Antibody Reactions; D002025:Bufonidae; D002471:Cell Transformation, Neoplastic; D007108:Immune Tolerance; D007814:Larva; D009365:Neoplasm Regression, Spontaneous; D009368:Neoplasm Transplantation; D009369:Neoplasms / Q000276:immunology*; D009374:Neoplasms, Experimental