Fig. 1From: 5-Methoxytryptophan enhances the sensitivity of sorafenib on the inhibition of proliferation and metastasis for lung cancer cellsReduction effect of sorafenib and 5-methoxytryptophan (5-MTP) on the cell viability and proliferation of Lewis lung cancer (LLC) cells. The viability of LLC cells was reduced by sorafenib (A) or 5-MTP (B) treatments in cytotoxicity assay. The proliferation of LLC cells was inhibited by sorafenib (C) or 5-MTP (D) treatments in colony forming assay. Asterisks indicate a significant difference in drug-treated cells at indicated concentrations singly compared to DMSO-treated cells. *P < 0.05Back to article page