PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10491654-9 1999 In conclusion, the decrease in intracellular Cu, Zn-SOD activities inhibits progesterone production by rat luteal cells, which may be mediated by superoxide radicals, suggesting that intracellular Cu,Zn-SOD plays important roles in the regulation of luteal function. Superoxides 146-156 superoxide dismutase 1 Rattus norvegicus 197-206