title: True or apparent inhibition of nucleic acid synthesis by the chromosome-breaking purine derivatives adenine and 8-ethoxycaffeine.
mesh_terms: D000225:Adenine / Q000494:pharmacology*; D002110:Caffeine / Q000494:pharmacology*; D004247:DNA / Q000096:biosynthesis*; D003839:Deoxyadenosines / Q000494:pharmacology; D006918:Hydroxyurea / Q000494:pharmacology; D010710:Phosphates / Q000037:antagonists & inhibitors; D010759:Phosphorus Isotopes; D010944:Plants / Q000187:drug effects; D012313:RNA / Q000096:biosynthesis*; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D003839:Deoxyadenosines; D010710:Phosphates; D010759:Phosphorus Isotopes; D014316:Tritium; D002110:Caffeine; D012313:RNA; D004247:DNA; D000225:Adenine; D013936:Thymidine; D006918:Hydroxyurea