PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
57921-4	1976	A polypeptide, homologous to human J chain, was isolated by chromatography on DEAE-cellulose from the reduced and alkylated X. laevis hexameric macroglobulin.	DEAE-Cellulose	78-92	joining chain of multimeric IgA and IgM	Homo sapiens	35-42