Figure 1.

Comparison of cell viability after treatment with p28 and CT-p26 peptides (0 to 100 μM) in A549 (lung) and MCF-7 (breast) cancer cells incubated over 48 h. Untreated condition (control) consisted of cells incubated with medium only. Values represent the means ± SD, and each condition had at least n = 3. *, **, ***, **** and ns denote significant differences of p < 0.1, p < 0.01, p < 0.001 and p < 0.0001 and differences that were not statistically significant, respectively, when comparing control with treatments.