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Fig. 5. Lateral cell adhesion. (A,B) Surface (A) and internal (B) images of a wild-type embryo viewed by light microscopy. (C,D) Surface (C) and internal (D) views of a par-6(ZF1) embryo. (E) Transmission electron micrograph of a par-3(ZF1) embryo. The arrow indicates abnormal intercellular separations. Opposing arrowheads in E indicate contacts between lateral membranes. n, nucleus. Scale bars: 5 µm in D; 1 µm in E.