Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12951-022-01352-6/MediaObjects/12951_2022_1352_Fig2_HTML.png)
Identification of 3D-Exo released from disparate number of ADSCs (Exo 2, Exo 4 and Exo 6). AÂ Particle size distribution measured using nanoparticle tracking analysis. BÂ Morphological characterization via transmission electron microscopy. Scale bar: 100Â nm. CÂ Protein markers of 3D-Exo and their corresponding parental ADSCs extract quantified by western blotting