Effects of 19-BJB on cells viability in T24 (A), J82 (B), NTUB1 (C), NP14 (D), NTaxol (E), HaCat (F) cells. The cells were treated with different concentrations of 19-BJB for 48 h. The cell viabilities were measured by MTT assay as Table 1. Values are expressed as mean ± SD for triplicate samples and expressed as a percentage of control (set as 100%). * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001.