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Excretion kinetics of D4-MEP. Excretion of the urinary metabolite D4-MEP from 16 participants over mid-time (mid time point of collection interval) after combined inhalation and dermal exposure to D4-DEP (A) and dermal only exposure to D4-DEP (B). The y-axis is presented in a logarithmic scale, and time points are given in mid-time (mid time point of collection interval).
