Table I.

Arsenate EC₅₀ values and estimated PC production at EC₅₀ concentration of H. lanatus clones from an uncontaminated (NM) and a contaminated (M) site

Code	AsEC50	Estimated PC
	μm	μmol GSH equivalent g−1 dry wt
NM1	40	4.5
NM2	3	1.5
M1	>1,000	28.5
M2	800	23.9

PC production was estimated from the dose response curves in Figure 2.