Caspase-3 levels in (A) K562 and (B) R-K562 cells incubated with 100 µM IM, 2,500 nM Das, 100 ng/ml LPS, 10 ng/ml TNF and/or 50 µg/ml Verb for 48 h. *P<0.05 untreated K562 control cells vs. cells treated with Das, TNF, Verb, IM + Verb, Das + Verb, LPS + Verb and TNF + Verb, ∆P<0.05 IM + Verb vs. IM, ∑P<0.05 Das + Verb vs. Das, ΩP<0.05 LPS + Verb vs. LPS, **P<0.05 untreated R-K562 control cells vs. cells treated with IM, Das, TNF, IM + Verb, Das + Verb and TNF + Verb, ΨP<0.05 Verb vs. IM + Verb, Das + Verb and TNF + Verb (n=5). IM, imatinib; Das, dasatinib; LPS, lipopolysaccharide; TNF, tumor necrosis factor α; Verb, verbascoside.