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Western blot assay showed that the expressions of Col‐1 and Runx2 increased gradually with the mature of dental germs (A, C, D). p75NTR was on the slight increase with the mature of dental germs and significantly increased after mineralization induction (B, E). p75NTR/Exp means p75NTR experiment group, and p75NTR/Cont means p75NTR control group (*P < 0.05, ns.=no significant difference)
