PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 23013665-9 2012 Recent studies indicate that [11C]choline PET/CT has the potential to early restaging PCa patients for PSA levels lower than 1-1.5 ng/mL. Choline 34-41 aminopeptidase puromycin sensitive Homo sapiens 103-106