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The Optimizationof FermentationCondition for Cellulase Production by Penicillium oxalicum Feasibility of replacing cholesterol by β-sitosterol to prepare quercetin liposomes Isolation and Identification of Serratia marcescens Yj1，and Separation and Purification of Organophosphate Degrading Enzymes Appraisal of Antiox idation Activity ofMagnolia guandif lora Leaves Study on preparation and in vitro transdermal penetration of betulinic acid ethosomes modified by sodium deoxycholate Preparation and quality evaluation of two types of colchicine ethosome patches