Virus Analysis by Amos Kudu Gele, student of Irgib Africa University.
IRGIB-Africa University Cotonou, Benin Republic Amos kudu Ibrahim Gele: _Biomedical laboratory science/Analysis student_ little knowledge about viruses: What to know about *VIRUS* Introduction: Virus:is a tiny particle _(virion)_ consisting of a core DNA or RNA surrounded by a protein coat _(capsid)_. Structure and properties Properties: Intracellular parasite i.e _requires living host cell in order to multiply_ Reproduce only within cell they infect. Contain either DNA or RNA,not all _( true cell has both)_ Structure: Virion: a single infective virus particle. Viral size:are determine with the aid of microscopy. Different viruses varies considerably in size. Although most are a bit smaller than bacterial. all viruses have atleast one of this types of nucleic acid: Double - stranded DNA Single - stranded RNA Double - stranded RNA Single - stranded DNA Common shape of viruses: 1. Helical viruses _(e.g Ebola virus)_. 2. Polyhedral viruses _