FIGURE 2.

The model diagram of exosomes combined with hydrogels therapy for IUA is as follows: (A). After the endometrial and stroma were damaged, inflammatory cells infiltrated, collagen fibers replaced normal tissues, the number of glands and blood vessels was reduced and bacteria polluted; (B). After the injection of exosomes and hydrogels, the uterus began to repair, and endometrial progenitor cells migrated to the injured site and differentiated into epithelial cells and stromal cells, and inflammatory cells played an anti-inflammatory role to promote tissue repair and increase angiogenesis; (C). Uterine cavity returned to normal.