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. 2020 May 29;8:393. doi: 10.3389/fcell.2020.00393

FIGURE 2.

FIGURE 2

Effect of matrix confinement and TSA-treatment on the invasiveness of the two breast cancer cell types. (A) Illustration of the invasion assay in collagen matrix scaffolds. (B) Invasiveness is presented as percentage of invasive cells and invasion depth for human MDA-MB-231 breast cancer cells and human MCF-7 breast cancer cells for loose (1.5 g/l) and dense collagen matrices (3.0 g/l). Note: these results are the same as the control conditions for TSA-treatment in (C). (C) Effect of TSA on the percentage of invasive cells and their invasion depth. (D) Cumulative probability as a comparative invasion histogram for MDA-MB-231 and MCF-7 on loose (left) and dense matrices (right). (E) Exemplary cell positions are presented in xz direction for MDA-MB-231 (left) and MCF-7 cells (right) on dense matrices. **p < 0.01, ***p < 0.001 and n.s. not significant.