Histopathological Profiles of Rats (Rattus norvegicus) Induced with Streptozotocin and Treated with Aqueous Root Extracts of Ruellia tuberosa L

链脲佐菌素诱导并用Ruellia tuberosa L.根水提取物治疗的大鼠（Rattus norvegicus）的组织病理学特征