Fig. 2

A Schematic illustration of Nano-Se@S accelerates tissue regeneration in zebrafish fin. B Schematic illustration of calculating the regeneration rate of zebrafish caudal fin. C Representative images of the Nano-Se, Nano-S, and Nano-Se@S solutions. D Representative images of the Nano-Se, Nano-S, and Nano-Se@S accelerate caudal fin regeneration. Dpa: days past amputation. E Regeneration rate of zebrafish caudal fin treated with Nano-Se, Nano-S, and Nano-Se@S on different days. (3 independent biological repeats n = 8). F Wound healing assay to evaluate the migration of HFF cells after being treated with Nano-Se@S and DMEM with 10% FBS. Cells were wounded and monitored using a microscope for 12 h. The red areas represent migrating cells. G The migration rate of HFF cells induced by Nano-Se-S (3 independent biological repeats n = 9). (Mean values ± SD, *P < 0.05, **P < 0.01, ***P < 0.001, ****P < 0.0001)