Identification and Determination of Borneol in Liyan Gao by TLC and GC Preparation of perillyl alcohol ointment and investigaion on its in vitro transdermal penetration STUDIES ON THE CONTROL OF THE OSTER WEEVIL (CRYPTORRHYNCHUS LAPATHI L.)BY USING BENZOYLPHENOL UREA NO.3 Studies on quality standard of Yifu ointment In vitro percutaneous penetration studies of Jinhuang Gel based on principal component analysis An Inquiry into the Function of Diffusing Drugs of Different Bases Study on absorption and accumulation of mercury in rats by repeated administration of Yuhong ointment In vitro comparison of transdermal characteristics of Xiaoyu ointment and Xiaoyu plaster