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Glial fibrillary acidic protein (GFAP) immunofluorescence staining was used to observe the morphological changes of astrocytes and the expression of GFAP in different dose groups (×320, a, b, c, d, e scale bar = 100 μm). (a) Control (0 Gy), (b) 5 Gy irradiation group, (c) 10 Gy irradiation group, (d) 15 Gy irradiation group, and (e) 20 Gy irradiation group, and all groups were observed at the 48‐hr node
