{HEAD ~ Especially valuable amino acids} are the aromatic amino acids such as anthranilic acid, p aminobenzoic acid, m aminobenzoic acid, and {TAIL ~ 3 amino p toluic acid} 
{ HEAD ~ Especially valuable amino acids } are the aromatic amino acids such as anthranilic acid , p aminobenzoic acid , m aminobenzoic acid , and { TAIL ~ 3 amino p toluic acid }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL