Stichocyte

Stichocytes are glandular unicellular cells arranged in a row along the posterior portion of the oesophagus, each of which communicates by a single pore with the lumen of the oesophagus. They contain , rough endoplasmic reticulum, abundant Golgi apparatuses, and usually 1 of 2 types of secretory granules, α-granules and β-granules, indicating secretory function . Collectively stichocytes form the stichosome. Characteristic of Trichocephalida and Mermithida, two groups of nematodes.

...
Wikipedia