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hCPs seeded on silicon slide establish close interactions with micropillars. (A) Top-view SEM image showing hCPs seeded at standard density on silicon micropillars. (B,C) Cross-sectional SEM images showing hCPs seeded at low density on silicon structures to visualize single cells-micropillars interactions. Scale bar: 20 μm (A,B) and 10 μm (C).
