PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2709304-0 1989 Plasma prolactin concentrations in pinealectomized ewes receiving melatonin treatment and in pineal intact ewes maintained under a non-24-hour photoperiod. Melatonin 66-75 prolactin Homo sapiens 7-16