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. Author manuscript; available in PMC: 2013 Mar 10.
Published in final edited form as: J Cell Sci Ther. 2011 Oct 13;1(2):S1-002. doi: 10.4172/2157-7013.s1-002

Figure 4.

Figure 4

Effects of combination treatment on cell cycle arrest and apoptosis (Left panels) . Effects of single treatment (erlotinib, celecoxib and ionizing radiation) and combinations therapy on cell cycle head and neck cancer cells assessed by flow cytometry using propidium iodine staining. (Right panels) Effects of single treatment (erlotinib, celecoxib and ionizing radiation) and the combinations on apoptosis in head and neck cancer cells assessed by flow cytometry. After 72 hours of treatment, adherent and floating cells were collected and incubated with Annexin V-phycoerythrin. Each experiment was performed in triplicate. Each experiment was performed in triplicate. Points represent the mean and error bars represent the standard deviation.

a. SQ-20B

b. SCC-25

c. SCC-61