To detect {HEAD ~ specific types} of {TAIL ~ cells}, category specific labeling reagents can be used 
of
To detect { HEAD ~ specific types } of { TAIL ~ cells } , category specific labeling reagents can be used
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH