Fig. 8. Migration is impaired in S-1-P lyase null slugs. The wild-type Ax4 (A) and S-1-P lyase null (B) cells were grown axenically and harvested for the slug migration assay as described in the Materials and Methods. Gray lines represent the trails of slime sheath, which are left behind during the migration of the slug during the 2 day period; dark dots indicate the final position of the migrating slug. The position of the light source is indicated by the arrowhead.

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