Fig. (2) Worms transformed with let-756 under the control of tissue specific promoters were phenotypically different. Worms transformed by let-756 (B) or let-756^R318 (C) under the control of P_let-756 promoter are not different from the control [Dpy Unc] strain (A) although the former are bigger (see Fig. (3) for morphometric analysis). Worms transformed with let-756 under the control of the P_myo-2 promoter show reduction in the size of the posterior part of the body (D). Animals with let-756 under the control of P_myo-3 develop harmoniously (E). Animals with let-756 under the P_egl-17 promoter show enlargement of the body width at the vulva (F). Arrows point to the vulva.