title: Direct radioimmunoassay for plasma corticosterone and aldosterone in frog. I. Validation of the methods and evidence for daily rhythms in a natural environment.
mesh_terms: D000450:Aldosterone / Q000097:blood*; D000818:Animals; D002940:Circadian Rhythm; D003345:Corticosterone / Q000097:blood*; D003429:Cross Reactions; D011863:Radioimmunoassay / Q000379:methods*; D011893:Rana esculenta; D013997:Time Factors
chemical_list: D000450:Aldosterone; D003345:Corticosterone