title: A critically ill child with deep cyanosis.
mesh_terms: D002648:Child; D003490:Cyanosis / Q000209:etiology*; D006801:Humans; D008297:Male; D008708:Methemoglobinemia / Q000150:complications / Q000175:diagnosis / Q000188:drug therapy; D008751:Methylene Blue / Q000627:therapeutic use; D014435:Typhoid Fever / Q000150:complications
chemical_list: D008751:Methylene Blue