Source:http://linkedlifedata.com/resource/umls/id/C1166980
GO: A plastid that contains unstacked, phycobilisome-bearing thylakoid membranes and is surrounded by a double membrane with a peptidoglycan layer in the intermembrane space between the two envelope membranes. Cyanelles are characteristic of algae in the class Glaucophyta, and may represent an ancestral form of plastid. [ISBN:052131687, ISBN:1402001894]