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Fig. 2. Cortical polarity in one-cell C. elegans embryos.
(A-F) Illustrations of aspects (see key) of C. elegans embryos
as they change from entry into the first cell cycle (left), to the completion
of polarity establishment (right), a period of about eight minutes. The
approximate timing of events relative to entry into the first cell cycle is
shown in the upper bar. Cortical activity is indicated by the gray outline of
the embryos; contractility is indicated by the cortical ingressions. The
identity of the proteins or complexes depicted is indicated in the key. The
acto-myosin network in C is indicated from a surface view of the embryo
cortex; other proteins and centrosomes are shown in the embryo mid-plane.
Embryo anterior is to the left. The complete kinetics of RhoGAP CYK-4
localization (E) have not been investigated and thus are not depicted
following the initiation of polarization.
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