In an additional embodiment, a composition is provided for permeabilizing a cell, comprising {HEAD ~ a polyvalent agent} that binds to {TAIL ~ a highly expressed cell surface antigen present} on the surface of a cell 
binds to
In an additional embodiment , a composition is provided for permeabilizing a cell , comprising { HEAD ~ a polyvalent agent } that binds to { TAIL ~ a highly expressed cell surface antigen present } on the surface of a cell
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH