Bio-Pulsed Stimulation Effectively Improves the Production of Avian Mesenchymal Stem Cell-Derived Extracellular Vesicles That Enhance the Bioactivity of Skin Fibroblasts and Hair Follicle Cells

生物脉冲刺激有效改善禽间充质干细胞衍生的细胞外囊泡的产生，从而增强皮肤成纤维细胞和毛囊细胞的生物活性