A high power view of the esophagus and its vicinity of a muscle larva of Trichinella spiralis.

The canalicular tree is (CT) a structure that conveys stichosome granules (,) into the esophagus (E).
The esophagus runs downwards by the cord (CO).
(see: Takahashi Y, Uno. T Mizuno N, Suzuki H, Yagi J, Aisaka A Araki T . Morphological study of the stichocyte granules of Trichinella spiralis muscle larvae. Jpn. J. Parasitol., 38, 77-85. 1989)