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CSLM images of MC3T3-E1 cells after 21 days of culture on Ti (a1–a4); Ti-pTAN (b1–b4); Ti-pTAN-1Stp-Sr (c1–c4); Ti-pTAN-2Stp-Sr (d1–d4). MC3T3-E1 cells were stained for nucleus (blue, a1, b1, c1and d1); actin (green, a2, b2, c2and d2); collagen 1 (red, a3, b3, c3 and d3).
