PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2932448-10 1985 The phosphate ester must be located to C-2 of xylose/xylitol as the 1-3H radioactivity could be released by periodate oxidation when it was preceded by alkaline phosphatase treatment. phosphate ester 4-19 complement C2 Bos taurus 39-42