“…Rats and humans differ by the relative proportion of MAs in the total metabolites excreted. Indeed, occupational studies investigating BMA and pTMA in human urine revealed concentrations in the tens to hundreds of µg/L range (Maestri et al, 1997, Angerer et al, 1998, Inoue et al, 2002, Inoue et al, 2004, Kawai et al, 2010, Lovreglio et al, 2010. The BMA to pTMA ratio also appears to differ between humans and rats, it nears 9.5 (median BMA and pTMA equal to 190 and 20 µg/L, respectively) for humans (Angerer et al, 1998), compared to between 1.5 and 2 for rats (this study).…”