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The sfrp-1-induced undermigration of the ALM neurons is suppressed by mutation of cwn-1 or cwn-2. (A) Schematic representation of the ALM migration. Note that the migration takes place at the end of embryogenesis. (B) The final positions of the ALML and ALMR neurons are indicated relative to the seam cells V1 to V6 (n >50). The broken lines indicate the wild-type position.
