Skip to main content
. 2021 Apr 14;41:12. doi: 10.1186/s41232-021-00163-w

Fig. 4.

Fig. 4

Histological analysis of the calvarial defect 16 weeks after the procedure. Sagittal sections of parietal bone were stained with hematoxylin-eosin and immunohistochemical staining for osteocalcin. a, f, k Vehicle. b, g, l DPSCs/COL. c, h, m DPSC-EVs/COL. d, i, n β-TCP. e, j, o HA. Left section: × 4 magnification, bar = 1 mm. Middle and Right section: × 10 magnification, bar = 0.1 mm