PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6184146-5 1982 Enterotoxin specific activity was increased for three strains by adding papaverine (hydrochloride crystalline), for two strains by adding each of caffeine and 3-isobutyl-l-methylxanthine, for one strain by adding each of theophylline, 6-mercaptopurine, and 2-amino-6-mercaptopurine, and for none of the strains by adding imidazole. hydrochloride 84-97 cpe Clostridium perfringens 0-11