Figure 5.
Pretreatment with MeHg renders C. elegans more resistant to a subsequent exposure to the toxicant. Dose-response curves were significantly shifted rightward under 0.3 mM MeHg (LC50=0.19±0.005) or 0.6 mM MeHg (LC50=0.20±0.004) (p<0.05) from control (LC50=0.15±0.004 mM MeHg) pretreatment conditions.