Fig. 3

The cytotoxicity of BPs. Cells were treated with BPs (0, 2, 4, 8, 16, 32, 64,128, 256, and 512 µg/ml) for 24 h, and EMSC viability was tested by cell counting kit (CCK-8) proliferation assay (n = 9). Data were expressed as mean ± standard deviation (SD). **p < 0.01.