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