PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 26496478-5 2015 We used four methods to test and verify the performance of this level-2 PPI network: cross validation, human AAA mRNA chip array comparison, literature mining, and verification in a mouse CaPO4 AAA model. capo4 188-193 AAA1 Homo sapiens 194-197