title: Action of hydroxyurea and N-carbamoyloxyurea on the cell cycle of Tetrahymena.
mesh_terms: D000818:Animals; D001345:Autoradiography; D002455:Cell Division / Q000187:drug effects*; D002470:Cell Survival / Q000187:drug effects; D004247:DNA / Q000037:antagonists & inhibitors / Q000096:biosynthesis; D006918:Hydroxyurea / Q000494:pharmacology*; D013769:Tetrahymena pyriformis / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D013936:Thymidine / Q000378:metabolism; D014316:Tritium; D014508:Urea / Q000494:pharmacology*
chemical_list: D014316:Tritium; D014508:Urea; D004247:DNA; D013936:Thymidine; D006918:Hydroxyurea