Fig. 3
Total silver content (on the left axis) versus the AgNPs content (mass-based on the right axis) in the a apical, b cell lysate, and c basolateral compartments of the BeWo b30 placental transfer model after 24 h exposure to 1 mg/L of (lA), (Cit), (BPEI) AgNPs, Ag2S NPs, or AgNO3, measured using spICP-MS. Concentrations are given as the mean ± SD (n = 3). Values with different letters are significantly different within the same treatment (p ≤ 0.05)