title: Annual variation and role of male hormone in the renal beta-glucuronidase activity of the chequered water snake, Natrix piscator.
mesh_terms: D000818:Animals; D002369:Castration; D005966:Glucuronidase / Q000378:metabolism*; D007668:Kidney / Q000033:anatomy & histology / Q000187:drug effects / Q000201:enzymology*; D008297:Male; D009929:Organ Size; D012098:Reproduction; D012621:Seasons; D012911:Snakes / Q000502:physiology*; D013739:Testosterone / Q000494:pharmacology / Q000502:physiology*
chemical_list: D013739:Testosterone; D005966:Glucuronidase