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Nomarski micrographs of vulval induction in various genetic backgrounds: (A) wild-type; (B) sli-1(sy143); (C) sem-5(n1619); (D) sli-1(sy143) sem-5(n1619); (E) sem-5(ay73); and (F) sli-1(sy143) sem-5(ay73). A, B, and D have phenotypically wild-type vulvae. C, E, and F are phenotypically Vul, where all VPCs have generated epidermal progeny (note the lack of vulval openings in these panels). In all panels, anterior is to the left and dorsal is toward the top. The scale bar is 20 μm.
