{TAIL ~ The reagent composition} contains complement and {HEAD ~ cells} which contain quantitatively determinable substance therein 
{ TAIL ~ The reagent composition } contains complement and { HEAD ~ cells } which contain quantitatively determinable substance therein
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH