(A-F) unc-62p∷gfp (A, C, E) and corresponding DIC images (B, D, F) of 1-M stage L1 (A-B), 2-SM stage L2 (C-D) and adult stage animals. unc-62p∷gfp is expressed throughout the M lineage, including mature vulval muscles (E) and in the P lineages (C). (G-J) GFP (G, I) and corresponding DIC images showing the expression of a functional translational CEH-20∷GFP in the M mesoblast (G-H) and the lack of M lineage expression of the transcriptional ceh-20p∷gfp in the M lineage (I-J). Green in I: ceh-20p∷gfp. Red in I: hlh-8p∷rfp. Notice that ceh-20p∷gfp is expressed in the other cell types that express CEH-20∷GFP, but not in cells of the M lineage (marked by arrowheads).