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Expression of nkx2.5 or ceh-22 in pharyngeal muscle rescues a ceh-22 mutant. Nomarski micrographs of the adult pharynx in wild type (A), a ceh-22(cc8266) mutant (B), and a ceh-22(cc8266) mutant rescued with either the ceh-22∷nkx2.5 (C) or the ceh-22∷ceh-22 (D) expression vectors. The poorly formed grinder (g) and thickened junction of the pharyngeal isthmus and terminal bulb (i-tb) characteristic of ceh-22(cc8266) are marked in B.
