1. Content Determination of Vitamin B_2 in Kouqiangkuiyangling Capsules by HPLC; HPLC法测定口腔溃疡灵胶囊中维生素B_2的含量2) Oral ulcers 口腔溃疡 1. Change and significance of T-lymphocyte subsets in peripheral blood of patients with recurrent oral ulcers; 复发性口腔溃疡患者外周血T淋巴...