Fig. 4. DV patterning of the cuticle is rescued by dedicated activator DL
variants. (A-H) Cuticle preparations of fully developed embryos
expressing DL variants produced by females of the indicated genotypes (see
Materials and methods). Anterior is to the left. (I) DPP/BMP signaling
is redundantly blocked during DV patterning in invertebrate and vertebrate
embryos.