Figure 1.

Low‐dose oral Cd exposure causes Cd lung tissue deposition comparable to human adults. Mice were exposed to 10 mg/L CdCl₂ in drinking water (ad libitum access) for 20 weeks before sacrifice. Mice achieved comparable lung burden of Cd to that of human adults. The dashed line represents the mean of the human data set. n = 8 (mice) or 5 (humans). *P < 0.05, **P < 0.01 by one‐way analysis of variance (ANOVA) with Holm–Sidak posttest. ****P < 0.0001 by Student's t test.