AExcFIG 8: Excretory sinus region in a day 15 adult.

A. Left, Diagram of the C. elegans head with region of the excretory sinus indicated by a grey box. Right, diagram of the excretory sinus region. Arrows indicate approximate positions of (B-F).
B,C. Transverse photomicrographs in excretory sinus region from young adult (B) and day 15 adult (C). Boxes outline the regions enlarged in (D&E).
D,E. Enlarged views of the excretory sinus regions from (B&C).
E. In this day 15 adult, the excretory canal is disorganized, the gland cell is not identifiable and the duct cell contains increased levels of a dark substance.
F. A different day 15 adult showing excretory glands with apparently empty vesicles. Excretory structures are outlined. Excretory cells, pink; gland cells, purple; duct cell, brown. These sections are situated posteriorly of the excretory pore.
Bars: 5 microns. (Image source: B,D: N513A [D. Hall] 1482, C: N812 [D. Hall] F828, E: N812 [D. Hall] F829, F: N810 [D. Hall] M774.)

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