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Formononetin promoted apoptosis in NSCLC cells, Lung cancer cells were treated with formononetin at indicated concentrations (100, 150 and 200 μM) for 24 h. Flow cytometry was performed to measure the apoptosis rate of A549 (A) and NCI-H23 (B) cells. *P < 0.05; **P < 0.01.
