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Fig. 6. The Muv phenotype in ceh-20(mu290) animals. Nomarski
photomicrographs of L4 larvae. (A) Wild-type animal showing a normal vulval
invagination formed by P(5-7).p (arrowhead). (B) ceh-20(mu290) animal
showing separate invaginations formed by P5.p and P6.p while P7.px (not shown)
failed to divide further. P4.p also formed a small invagination. (C)
ceh-20(mu290) animal showing an invagination at P2.p in addition to
the invagination formed by P(5-7).p (not shown). (D) ceh-20(RNAi)
animal showing P4.p forming a separate invagination adjacent to the
invagination formed by P(5-7).p. (E) ceh-20(mu290) lin-39(n1760)
animal showing separate invaginations formed by P5.p and P6.p. P7.p did not
divide in this animal. (F) unc-62(mu232) animal showing the
incomplete migration of some P7.p descendants towards P6.p descendants,
resulting in the asymmetric invagination. Animals in all panels are oriented
with anterior towards the left.