Chemical communication systems in the cell.
D003142:Communication; D003491:Cybernetics; D004798:Enzymes; D005823:Genetics; D006801:Humans; D009711:Nucleotides; D012313:RNA
D004798:Enzymes; D009711:Nucleotides; D012313:RNA
CYBERNETICS; ENZYMES; GENETICS; NUCLEOTIDES; RNA