Fig. 6. Effect of the heat shock induced lin-11 expression. (A) Pn.pxx stage heat pulse causes ectopic invagination in some of the P5.p and P7.p lineage cells. (B) The same animal as in A. The ectopic expression of egl-17::GFP can be seen in the presumptive vulA of the P7.p lineage. (C) In this animal (heat pulsed during Pn.px stage), all vulval cells have invaginated. The hs::lin-11 transgenic strains are syEx530 (A,B) and syEx500 (C). utse, uterine seam cell. In all images, anterior is towards the left. Scale bar: 8 µm.