Figure 1From: Diesel exhaust particles modulate the tight junction protein occludin in lung cells in vitro Internalized DEP in an epithelial cell. TEM images of 16HBE14o- cells in the triple cell co-culture model showing internalized DEP. Cells were exposed to 125 μg/ml DEP (A) and 0.5 μg/ml DEP (B) for 24 h and then processed for TEM. A detailed view from A and B (white square) is shown in A'and B'.Back to article page