DExcFIG 2: Excretory gland cells in L2 and dauer larvae.
A&B. Transverse sections from the head regions of an L2 (A) or dauer (B) larva, with positions of the excretory gland (purple outline) and excretory canal cells (pink outlines) indicated. Bars, 5 microns.
C&D. Close-up views of the boxed regions from A&B showing the excretory gland cells in the L2 (C) and dauer (D) larva. Numerous granules are present in the excretory gland cell during the L2 stage, but are absent in the dauer stage. The excretory canal cells have similar appearances in the L2 and dauer stages. Bars, 1 micron. (Image sources: L2 [D. Riddle] L2 28-14 #1306; dauer [D. Riddle] 50-2-2 #804.)
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