DCutFIG 3: Progression of dauer alae in different head regions.
Numbers in upper panel indicate approximate positions of slices shown in lower panels. Presence and elaboration of lateral alae corresponds to presence of seam cells (orange rods in upper panel). (Image source: upper panel, WormAtlas SeamFIG2; lower panels, [D. Riddle] TEM, N2 starved dauers, 50-6-2 229, 293, 24M.)
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