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Representative ALM cell migration defect. (Right) Enlargement of the boxed region. (A) In wild type, ALM (arrow) migrates to positions between V2 and V3 nonmigratory marker cells. (B) In cwn-1; cwn-2 mutants, ALM (arrow) is often misplaced anteriorly and is found above the nuclei of the V1 marker cell. Bars, 20 μm.
