{HEAD ~ 3 antibody} by modifying an amino acid residue that is exposed on {TAIL ~ the surface} of the anti glypican 
{ HEAD ~ 3 antibody } by modifying an amino acid residue that is exposed on { TAIL ~ the surface } of the anti glypican
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH