{HEAD ~ The composition} comprises {TAIL ~ a polyvalent agent} that binds to a highly expressed cell surface antigen present on the surface of a cell 
comprises
{ HEAD ~ The composition } comprises { TAIL ~ a polyvalent agent } that binds to a highly expressed cell surface antigen present on the surface of a cell
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH