title: Patterns of oestrogen and testosterone excretion during pregnancy in a gorilla (Gorilla gorilla).
abstract: Oestrogen and testosterone concentrations in the urine were determined by radioimmunoassay. Total oestrogen concentrations rose from 25 ng/mg creatinine in the non-pregnant animal to a mean of about 2 microgram/mg creatinine in the 50 days before term. There was a significant (P less than 0.001) correlation between oestrogen and testosterone concentrations until 11 days before parturition.
mesh_terms: D000818:Animals; D003404:Creatinine / Q000652:urine; D004967:Estrogens / Q000652:urine*; D005260:Female; D006071:Gorilla gorilla / Q000378:metabolism*; D011247:Pregnancy; D011270:Pregnancy, Animal; D013739:Testosterone / Q000652:urine*
chemical_list: D004967:Estrogens; D013739:Testosterone; D003404:Creatinine