Fig. 8. Apoptosis-related mRNA expression in S. pombe cells exposed to 0–800 mg L^–1 terpinolene. mRNA levels of Pca1 and Sprad9 were measured by RT-PCR. Values are presented as mean ± SEM. Statistical analysis was made to compare experimental groups and the control group. Significantly different values are indicated by asterisks (One-way ANOVA, *p < 0.05, ***p < 0.001). Values were taken from at least three independent biological replicas (n = 3).