title: Seasonal changes in the accessory reproductive system and plasma testosterone levels of the male tammar wallaby, Macropus eugenii, in the wild.
mesh_terms: D000828:Animal Population Groups / Q000502:physiology*; D000818:Animals; D000835:Animals, Wild / Q000033:anatomy & histology / Q000502:physiology*; D002030:Bulbourethral Glands / Q000033:anatomy & histology; D005837:Genitalia, Male / Q000033:anatomy & histology / Q000502:physiology*; D007614:Macropodidae / Q000033:anatomy & histology / Q000502:physiology*; D008297:Male; D008394:Marsupialia / Q000502:physiology*; D009929:Organ Size; D011467:Prostate / Q000033:anatomy & histology; D012621:Seasons; D012741:Sexual Maturation; D013739:Testosterone / Q000097:blood*
chemical_list: D013739:Testosterone