lymphangion

https://doi.org/10.1351/goldbook.13394
Morphological or functional unit of lymphatic vessels consisting of the region between adjacent lymphatic valves.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1204 [Terms] [Paper]