Fig. 2

Evaluation of dECM@exo. (A) dECM@exo exhibited excellent injectable. (B) 3D printed 2 mm x 2 mm x 1 mm dECM@exo. (C) dECM@exo orthotopic transplantation. (D) Examination of the relationship between microsphere particle size and polydispersity index (PDI) at different hUCMSC-exos concentrations (n = 3). (E) Exhibiting green fluorescence (live cells with calcein AM) and red fluorescence (dead cells with EthD-1) as observed under a laser confocal microscope. (F) In vivo biodistribution and degradation of luciferase-labeled dECM@exo. Scale bars: E, 100 μm. Data were expressed as mean ± standard deviation. *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001