Time-dependent mortality of workers exposed to fipronil at 0.25 μg mL⁻¹ and 0.56 μg mL⁻¹ after 12, 24, 36, 48, 60, and 72 h.

Data are presented as the mean ± standard error (S.E.) of three independent replicates. Different letters after the standard errors indicate significant differences among treatments based on ANOVA followed by Tukey’s multiple comparison test (p<0.05) for the same time point.数据以三次独立重复实验的平均值±标准误（S.E.）表示。各处理组标准误后的不同字母标注，表明同一时间点下，经单因素方差分析（ANOVA）后进行Tukey多重比较检验（p<0.05），各组间存在显著差异。