Objective To observe the effect of Penyan Pill on genital histomorphology in mice infected with Ureaplasma urealyticum (UU), and to preliminarily investigate the therapeutic mechanism of Penyan Pill on UU infection. Methods A UU-infected mouse model was established by subcutaneous injection of estradiol benzoate and vaginal inoculation of standard UU strain. The model mice were randomly divided into traditional Chinese medicine (TCM) group, Western medicine group, and model group, and a blank group was set; these mice were given Penyan Pill...