Patent ID: 8084029

Claim:
A method of delivering a diagnostic/detection agent or therapeutic agent to a cell that expresses alpha-fetoprotein (AFP) comprising: a) obtaining a composition comprising an anti-AFP antibody or antigen-binding fragment thereof that competes for binding to alpha-fetoprotein with a murine antibody comprising heavy chain complementarity determining region (CDR) sequences CDR1 (SYVIH, SEQ ID NO:4), CDR2 (YIHPYNGGTKYNEKFKG, SEQ ID NO:5) and CDR3 (SGGGDPFAY, SEQ ID NO:6) and light chain CDR sequences CDR1 (KASQDINKYIG, SEQ ID NO: 1), CDR2 (YTSALLP, SEQ ID NO:2) and CDR3 (LQYDDLWT, SEQ ID NO:3), wherein said antibody or fragment is conjugated to at least one diagnostic/detection agent or at least one therapeutic agent; and b) administering the composition to a subject.