Term Name:	Schweigger-Seidel sheath
Synonyms:
Definition:	A phagocytic sleeve that is part of a sheathed arteriole of the spleen, and is sometimes referred to as a splenic ellipsoid. It is a spindle-shaped thickening in the walls of the second part of the arterial branches forming the penicilli in the spleen
Ontology:	Uberon Ontology [UBERON:0010174]