PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19215533-1 1991 Abstract The influence of sex steroids and the dopaminergic system on the in vivo modulation of prolactin (PRL) mRNA levels was investigated by quantitative in situ hybridization in the male rat anterior pituitary gland. Steroids 30-38 prolactin Rattus norvegicus 96-105