For the same purpose, CyA-loaded PLA particles were prepared by solvent evaporation process using chitosan-g-cholestorol amphiphilic polymer as surfactant.

• 以聚乳酸为载体材料,胆固醇-壳聚糖双亲性聚合物为表面活性剂,通过溶剂挥发法制备了壳聚糖表面改性且包载CyA的聚乳酸微粒,用于角膜移植后免疫排斥反应治疗的滴眼液。