Figure 4. Mean cross-sectional area of muscle fibers. CX: cardiotoxin (CTX)-injected group, MX: CTX-injected with MENS treatment group. Values are means ± SEM. Units are µm². n=5 in each group. When the significant main effect (treatment or time) analyzed by using two-way ANOVA (treatment x time) was observed, the results were shown using “a” (treatment) or “b” (time). When a significant interaction between two effects (treatment and time) were observed, the results were shown using “c”. Significant differences of the data between 1 and 2 weeks, 2 and 3 weeks and 1 and 3 weeks were shown using *, † , and ‡, (p < 0.05), respectively.