{HEAD ~ Analysis} of the appearance and disappearance of members of the complex and of the cross linked substance provides {TAIL ~ a tool} for evaluating components of living systems and thereby to follow the effects of treatments of, and abnormalities in, these systems 
{ HEAD ~ Analysis } of the appearance and disappearance of members of the complex and of the cross linked substance provides { TAIL ~ a tool } for evaluating components of living systems and thereby to follow the effects of treatments of , and abnormalities in , these systems
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL 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 OTH OTH OTH