PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 34058562-5 2021 As fusions to human IgG1 Fc, VHH-Fcs bound Axl+ tumor cell lines and mertansine-loaded VHH-Fcs were cytotoxic in vitro against Axl+ cells in proportion to their binding affinities. Maytansine 69-79 AXL receptor tyrosine kinase Homo sapiens 127-130