PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7399399-5 1980 Results showed that: (a) prolactin levels were higher in the groups submitted to prolonged periods of constant light (60--120 days); (b) after ovariectomy prolactin levels decrease but remain higher in these same groups, and (c) constant light produced a higher prolactin response to estradiol benzoate. estradiol 3-benzoate 284-302 prolactin Rattus norvegicus 25-34