PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
6795624-4	1981	However, comparison of 5-methylcytosine contents showed that J chain gene expression correlates with a loss of methyl groups.	5-Methylcytosine	23-39	joining chain of multimeric IgA and IgM	Homo sapiens	61-68