{HEAD ~ The humanized anti CD74 antibody} or fragment 28, wherein the cytotoxic agent is a drug or {TAIL ~ toxin} 
{ HEAD ~ The humanized anti CD74 antibody } or fragment 28 , wherein the cytotoxic agent is a drug or { TAIL ~ toxin }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL