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Osteoblast response on LbL surfaces. MC3T3 (A) adhesion after 4 h and (B) alkaline phosphatase activity after seven, 14, and 21 days of culture on non-coated pTi surface; (B) one bi-layered ((C + P)1), 10 bi-layered ((C + P)10), 20 bi-layered surfaces ((C + P)20), and an additional layer of chitosan for the different layered surfaces (Ti + C, (C + P)10C, and (C + P)20C).
