STAT3 and Stroke: Astrocyte growth was stifled by miR-124, which was secreted in tiny extracellular vesicles by M2 microglia after stroke and increased neural axon regrowth by inhibiting glial fibrillary acidic protein (GFAP) and signal transducer and activator of transcription 3 (STAT3), thus aiding in neurological rehabilitation [127].