PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
2959477-1	1987	A hybridoma secreting a monoclonal antibody (H-20) that recognizes the 2,2,7-trimethylguanosine(m3G)-containing cap structure of U snRNAs was derived from a mouse which was immunized with a m3G-containing human serum albumin conjugate.	N(2),N(2),7-trimethylguanosine	71-95	histocompatibility 20	Mus musculus	45-49	
2959477-1	1987	A hybridoma secreting a monoclonal antibody (H-20) that recognizes the 2,2,7-trimethylguanosine(m3G)-containing cap structure of U snRNAs was derived from a mouse which was immunized with a m3G-containing human serum albumin conjugate.	m3g	96-99	histocompatibility 20	Mus musculus	45-49	
2959477-5	1987	As determined by competitive radioimmunoassay and protein-A--Sepharose immunoprecipitation, mAb H-20 crossreacts with intact m7G cap structures.	Sepharose	61-70	histocompatibility 20	Mus musculus	96-100