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. 2021 Nov 11;9:737275. doi: 10.3389/fcell.2021.737275

FIGURE 1.

FIGURE 1

Schematic diagram of the strategy for 3D-cultured adipose stem cells. Schematic diagram SLF-3D form spheroids and assay method. Morphological observation of 3D spheroid formation. Phase-contrast images of cell expansion at low density, high density, and 3D spheres.