Additional file 3: of Carbon black suppresses the osteogenesis of mesenchymal stem cells: the role of mitochondria

Figure S2. Absorbance of the supernatant of the CCK-8 reagent diluted with the cultured medium containing 0 to 30 μg / mL Printex 90 at 450 nm. After two hr. incubation at 37 °C, the solution was centrifuged by 1500 g for 2 min, and the absorbance of supernatant was measured immediately by Infinite M200 Pro (TECAN, Switzerland) at 450 nm, four repeats at each dosage have been calculated. (TIFF 12726 kb)