title: A mechanism for the distinction of foreign proteins by living systems based on peptide directed RNA synthesis.
mesh_terms: D000225:Adenine / Q000378:metabolism; D000818:Animals; D002250:Carbon Radioisotopes; D002478:Cells, Cultured; D007156:Immunologic Memory; D010455:Peptides; D011506:Proteins; D012313:RNA / Q000096:biosynthesis*; D011817:Rabbits; D013154:Spleen / Q000378:metabolism*
chemical_list: D002250:Carbon Radioisotopes; D010455:Peptides; D011506:Proteins; D012313:RNA; D000225:Adenine