PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2538547-9 1989 To analyze the binding of gp120/160 to CD4, we used a molecular assay in which an mAb (110-4) coupled to Sepharose CL4B allowed the attachment of soluble gp120/160 to the beads; 125I-sCD4 was then added to measure the binding of CD4 to different amounts of gp120/160. Sepharose CL 4B 105-119 CD4 molecule Homo sapiens 39-42