They release mercaptoacylamino acids which are already proved to be efficacious by enzymatic and chemical cleavage of {HEAD ~ disulfide bond} and by enzymatic hydrolysis of their esters or amides when administered to man and {TAIL ~ animal} 
They release mercaptoacylamino acids which are already proved to be efficacious by enzymatic and chemical cleavage of { HEAD ~ disulfide bond } and by enzymatic hydrolysis of their esters or amides when administered to man and { TAIL ~ animal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL