FIG. 3.

Cd levels in regional lymph nodes of SKH-1 mice topically applied with CdSe QD suspended at 9μM in an oil-in-water emulsion. The axial and brachial lymph nodes were removed from mice (n = 3 per group) topically treated as follows: (A) no QD applied; (B) QD applied to normal skin; (C) QD applied to tape-stripped skin; (D) QD applied to acetone treated skin; (E) QD applied to untreated skin and covered with occlusion patch; (F) QD applied to dermabraded skin; (G) QD applied to dermabraded skin and covered with occlusion patch. The animals were sacrificed at 0 h (open bar), 24 h (hatched bar), or 48 h (filled bar) after application of the emulsion.