Term Name:	gas vesicle
Synonyms:	gas vacuole
Definition:	An intracellular non-membrane-bounded organelle; a hollow structure made of protein, which usually has the form of a cylindrical tube closed by conical end caps. By regulating their relative gas vesicle content, aquatic microbes are able to perform vertical migrations.
Ontology:	GO: Cellular Component [GO:0031411]    QuickGO    AmiGO