Figure 1.
HBB2 inhibits tumor incidence and multiplicity in a mouse model of high-risk UV radiation-mediated cutaneous squamous cell carcinoma. Female SKH-1 hairless mice were exposed to UVB radiation (30 mJ/cm2/session) twice a week for 17 weeks, and then distributed into two groups. The mice from each group were treated topically with either 100 μl of 80% acetone (vehicle control group, n = 21) or 1 μmol of HBB2 dissolved in 100 μl of 80% acetone (HBB2-treatment group, n = 18) twice a week, for 12 weeks. Tumor incidence (a) is represented as the percentage of tumor-bearing animals in each group. Tumor multiplicity (b) is expressed as the total number of tumors in each group divided by the number of animals at risk; the data represent mean values ± SEM.