Figure 4: Rats exposed to Pb through oral gavage and treated with thiamine either simultaneously (A) or post-Pb exposure (B). The Pb levels of blood, bone and kidney were measured at the end of treatment. Bars indicate mean±SD and bars that do not share common superscripts differ significantly (P < 0.05). SD, standard deviation; Pb, lead. Source: Reproduced with permission from Ref. 23.