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Adipose cell-laden collagen enhances invasion and escape of breast tumors. (a) Time-lapse phase-contrast images of tumors in adipose cell-free (left) and adipose cell-laden (right) collagen gels. Images are from tumors with initial tumor-to-cavity distances of 87 μm (adipose cell-free) and 95 μm (adipose cell-laden). (b) Invasion and (c) escape kinetics of microtumors in adipose cell-free and adipose cell-laden collagen.
