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. 2014 Aug 5;9(8):e104019. doi: 10.1371/journal.pone.0104019

Figure 4. The proliferation of MSCs and reactive oxygen species (ROS) generation assay on different materials after 48 h of incubation.

Figure 4

(a) MSCs proliferation examined by MTT assay on control (TCPS), pure Col, and Col-Au nanocomposites containing 17.4 ppm, 43.5 ppm, and 174 ppm of AuNPs after 48 h of incubation. **p<0.01: greater than control (TCPS). (b) The intracellular ROS quantified by 2, 7-dichlorofluorescein diacetate (DCFH-dA) and flow cytometric analysis. **p<0.01: greater than control (TCPS).