PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
8652633-3	1996	The extent of sialylation of catalase, estimated by ammonium sulfate precipitation as 3.8+/-0.4 (mean+/-S.D.)	Ammonium Sulfate	52-68	catalase	Homo sapiens	29-37	
8652633-6	1996	Formation of sialylated catalase was confirmed by ammonium sulfate or trichloroacetic acid precipitation, molecular sieve chromatography and SDS-PAGE electrophoresis.	Ammonium Sulfate	50-66	catalase	Homo sapiens	24-32	
17408968-5	2007	The secreted catalase was purified to a purity of 95% by ammonium sulfate fractionation, anionic exchange-chromatography, and Macro-prep Ceramic Hydroxyapatite with a overall yield of 60%.	Ammonium Sulfate	57-73	catalase	Homo sapiens	13-21	
2313035-4	1990	Catalase was then purified to approximately 90% homogeneity by ammonium sulfate precipitation and superoxide dismutase was purified to apparent homogeneity by hydrophobic interaction chromatography.	Ammonium Sulfate	63-79	catalase	Homo sapiens	0-8	
403244-2	1977	During the purification of glutathione peroxidase and catalase by ammonium sulfate precipitation, ion exchange chromatography.	Ammonium Sulfate	66-82	catalase	Homo sapiens	54-62