Fig. 3. Cumulative percent of the dose of [3H]-bifenthrin (□), [3H]-deltamethrin (▲) or
[14C]-permethrin (○) detected in receptor fluid over 48 h after application to rat or
human skin. A dose of 100 nmol of each pyrethroid in acetone was applied to the skin.
At 24 h, the epidermal surface of the skin was washed with a mixture of soap:water
(1:1). After the wash, the cells were placed back in the holders and receptor fluid was
collected for an additional 24 h. Data represents mean±SD, N=8 for rat skin and N=3
for human skin.