Fig. 6.

Study of the reversibility of DPI effect on H₂O₂ production or iodide uptake (C/M) in PCCl3 cells. The experimental protocol is made up of 3 sequential incubations called A, B or C. ¹²⁵I⁻ for uptake (C/M) measurements or HVA and peroxydase II for H₂O₂ measurements were added in incubation C only, which lasted 45 min for ¹²⁵I⁻ uptake and 90 min for H₂O₂ production. Incubation A and B lasted 45 min each. DPI 10 μM was added either in A alone or in B alone, or in C alone. Empty columns: control. Filled columns: DPI 10 μM.