title: The effect of serial uterine biopsies and hysterectomy on peripheral blood levels of total unconjugated oestrogen and progesterone in the bitch.
mesh_terms: D000818:Animals; D001706:Biopsy / Q000009:adverse effects*; D004285:Dogs / Q000502:physiology*; D004967:Estrogens / Q000097:blood*; D005260:Female; D006965:Hyperplasia / Q000209:etiology; D007044:Hysterectomy; D011374:Progesterone / Q000097:blood*; D013997:Time Factors
chemical_list: D004967:Estrogens; D011374:Progesterone