title: Seasonal effects of dehydration in air on urea production in the frog Rana pipiens.
mesh_terms: D000641:Ammonia / Q000097:blood / Q000652:urine; D000818:Animals; D001001:Anura; D003681:Dehydration / Q000097:blood / Q000378:metabolism* / Q000652:urine; D008433:Mathematics; D009997:Osmotic Pressure; D011894:Rana pipiens / Q000378:metabolism*; D012621:Seasons; D013997:Time Factors; D014508:Urea / Q000096:biosynthesis* / Q000097:blood / Q000652:urine; D014667:Vasopressins / Q000494:pharmacology
chemical_list: D014667:Vasopressins; D000641:Ammonia; D014508:Urea