Antigen antibody complex is formed by the antigen antibody reaction between the antigen in {TAIL ~ the sample} and {HEAD ~ the antibody} fixed on the outer surfaces of the cell membranes of the cells 
Antigen antibody complex is formed by the antigen antibody reaction between the antigen in { TAIL ~ the sample } and { HEAD ~ the antibody } fixed on the outer surfaces of the cell membranes of the cells
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH