PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
2592487-3	1989	The pattern changed when iron-free transferrin was treated with neuraminidase, which splits off the sialic acid from the carbohydrate chains.	N-Acetylneuraminic Acid	100-111	transferrin	Homo sapiens	35-46