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. 2021 Jan 21;6(2):e10212. doi: 10.1002/btm2.10212

FIGURE 4.

FIGURE 4

3D cell spheroids contain abundant extracellular matrix (ECM) proteins and growth factors. Fluorescence images showing (a) the presence of three cell types and (b) the inherent extracellular matrix and growth factors within hybrid 3D cell spheroids. (c) Representative live/dead images of 3D cell spheroids before and after injection through a needle. Scale bars, 100 μm