title: Action of nalidixic acid and hydroxyurea on two blue-green algae.
mesh_terms: D000458:Cyanobacteria / Q000187:drug effects*; D006918:Hydroxyurea / Q000494:pharmacology*; D009153:Mutagens; D009268:Nalidixic Acid / Q000494:pharmacology*
chemical_list: D009153:Mutagens; D009268:Nalidixic Acid; D006918:Hydroxyurea