A molecular model of the phenomenon of polarity.
D002874:Chromosome Mapping; D005815:Genetic Code; D006639:Histidine / Q000096:biosynthesis; D008954:Models, Biological; D009154:Mutation; D012333:RNA, Messenger; D012270:Ribosomes; D012486:Salmonella typhimurium / Q000201:enzymology*; D000637:Transaminases / Q000096:biosynthesis*
D012333:RNA, Messenger; D006639:Histidine; D000637:Transaminases