bcmo-1::GFP expression in post-embryonic C. elegans. Images of untreated C. elegans (A, C, and E), and nematodes exposed to 100 μm cadmium for 5 h (B, D, and F) and 24 h (G). L1 (A and B) and L4 (C and D) larvae are at 400× and 200× magnification, respectively. Adult C. elegans (E, F, and G) are composites of images acquired at 200× magnification. Arrowhead, indicates the location of a bcmo-1::GFP expressing embryo in a gravid adult nematode.