Sadman wrote morphology and physiology of Dengue virus
A mature dengue virion consists of an isometric nucleocapsid 20-30 nm in diameter, covered by a lipid envelope 10 nm in depth. The envelope consists of a lipid bilayer in which is embedded an E and M part. The envelope protein has the size between 51,000 and 59,000 Daltons that mediates attachment, fusion, and penetration, and a small non glycosylated internal matrix protein of approximately 8,500 Daltons. The envelope protein is glycosylated in most Flavi viruses and is exposed on the virion surface. The lipid composition of the envelope is dictated by the composition of the host cell membrane from which the viruses buds (Monath, 2008; Kuhn et al., 2002; Innis et al., 1989). Nepal