Expression patterns driven by the mdf-2 promoter. pmdf-2::GFP is expressed at all developmental stages of C. elegans. Representative images of the pre-comma (A-D), mid (E and F) and late (G and H) embryonic stages with the majority of cells expressing GFP. (I-L) Representative images of the GFP signal in seam cells at L3 (I and J) and gut cells at L2 (K and L). (M-T) Representative images of the adult tissues that contain GFP signal including seam (M and N), gut (O and P), pharyngeal (Q and R) and vulval cells (S and T). The scale bar represents 25μm.