PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3008818-4 1986 The experimental broadening fit a model in which c-551 is in intermediate or fast exchange between free solution and a complex with cd1, with an association constant for the complex in excess of 10(4) M-1. Carbon 46-47 CD1c molecule Homo sapiens 132-135