title: Evidence for omitting the petroleum ether extraction in plasma corticosterone determination.
mesh_terms: D000818:Animals; D002369:Castration; D003345:Corticosterone / Q000097:blood*; D004971:Estrus; D005260:Female; D005470:Fluorometry; D007016:Hypophysectomy; D010053:Ovary / Q000601:surgery; D010578:Petroleum; D011247:Pregnancy; D051381:Rats
chemical_list: D010578:Petroleum; D003345:Corticosterone