title: Problems of in-vitro incubation with radioactive precursors.
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000378:metabolism; D003562:Cytidine / Q000378:metabolism*; D006801:Humans; D009369:Neoplasms / Q000378:metabolism; D010649:Phenylalanine / Q000378:metabolism*; D011392:Proline / Q000378:metabolism*; D051381:Rats; D013936:Thymidine / Q000378:metabolism*; D014316:Tritium
chemical_list: D000970:Antineoplastic Agents; D014316:Tritium; D010649:Phenylalanine; D003562:Cytidine; D011392:Proline; D013936:Thymidine