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Fig. 4 | BMC Biotechnology

Fig. 4

From: Recombinant mussel proximal thread matrix protein promotes osteoblast cell adhesion and proliferation

Fig. 4

a SEM image of type I collagen films in the presence (+) or absence (−) of PTMP1, b Senescence of MC3T3-E1 cells on Collagen film and denatured collagen film in the presence (+) or absence (−) of PTMP1. c Intensity plot of the senescence in (b). The ordinate is the intensity plot in percentage indicating the amount of senescence detected in (b). The abscissa is the four conditions shown in (b)

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