PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
19435602-4	2009	The IL-15 material was purified from other cellular proteins by dissolution in 6M guanidine HCl, followed by Ni-NTA chromatography in a buffer containing 8M urea.	ni-nta	109-115	interleukin 15	Homo sapiens	4-9	
19435602-6	2009	Mature IL-15 was generated by cleavage with recombinant enterokinase, which was subsequently removed by Ni-NTA chromatography.	ni-nta	104-110	interleukin 15	Homo sapiens	7-12	
19304509-3	2009	The recombinant fusion protein IL-15/SA was purified using Ni-NTA affinity chromatography and refolded, and the efficiency of surface modification of the fusion protein on biotinylated cells was examined by fluorescence-activated cell sorting.	ni-nta	59-65	interleukin 15	Homo sapiens	31-36