Figure 1.

Aspirin (ASA) inhibits the proliferation of lung cancer A549 and H1299 cells. (a,b) Methyl‐thiazolyl‐tetrazolium assay of A549 and H1299 cell lines under different doses was used to evaluate the effect of ASA on cell proliferation. (
) ASA (0 mM), (
) ASA (2.5 mM), and (
) ASA (5.0 mM). (c,d) Colony formation assay and the relative colony formation efficiency of the A549 cell line after treatment with different concentrations of aspirin was used to analyze the function of ASA in the malignancy of lung cancer cells. *** P < 0.001; ** P < 0.01. OD, optical density.