Effect of 18 on phosphorylation of HER2 and Akt. A549 lung cancer cell lines were incubated with 18 and after 36 h, cells were washed and lysed. Western blot was performed to determine p-HER2 and p-Akt as well as total HER2 and Akt. (Blots were cropped and presented). Quantification of signal intensities were done by ImageJ). Lapatinib was used as positive control. A) Western blot of HER2, p-HER2, Akt, p-Akt. Equal loading of GAPDH was used for comparison. Experiments were repeated three times. Quantification of B) p-HER2 and C) p-Akt using densitometry. Band intensity was represented with scaling from GAPDH band intensity. *p<0.05, **p<0.01.