DPhaSUPFIG 4: Marginal cells of the procorpus.

A&C. Transverse TEM section from the isthmus region of the pharynx of an L2.
A. Shading indicates cell types; muscles are green and marginal cells are purple. Inset shows location of enlarged region within cross-section of intact worm.
C. Same section as in A, except without shading to show intracellular features. (Image source: N2 L2 28-14 [D. Riddle] 1147.)
B&D. Transverse TEM section from the isthmus region of a dauer pharynx.
B. Shaded as for A.
D. Same section as in B, except without shading to show intracellular features.
Blue arrows indicate hemi-desmosomes; IF, intermediate filaments; aj, adherens junctions joining marginal cells and neighboring muscle cells. L2 and dauer images are to different scales in order to increase visual resolution. (Image source: N2 starved dauer 50-2-1 [D. Riddle] 772a and 772 [inset in B].)

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