PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19159386-1 2008 BACKGROUND/PURPOSE: The skin has a functional and active phosphocreatine (PCR)/creatine kinase (CPK) system that regenerates adenosine triphosphate energy reserves during periods of ischemia. Phosphocreatine 57-72 cystin 1 Mus musculus 96-99