The complement in {HEAD ~ the reagent composition} is activated by {TAIL ~ the antigen antibody complex}, and the cell membrane is lysed by the activated complement 
The complement in { HEAD ~ the reagent composition } is activated by { TAIL ~ the antigen antibody complex } , and the cell membrane is lysed by the activated complement
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH