Hanta Virus

Hanta Virus

Structure of Hanta Virus Source: Viral Zone Hantavirus falls under the Bunyaviridae family. The virion displays round or pleomorphic morphology with a diameter of roughly 120-160 nm. The virus capsid is enveloped by a single layer envelope. The envelope surrounds three nucleocapsids and has surface projections. Surface projections are distinctive spikes which are surrounded by a … Read more Hanta Virus

Human Cytomegalovirus

Structure of Human Cytomegalovirus Figure: Structure of Human Cytomegalo Virus, Source: Dr. Marko Reschke, Marburg, Germany Cytomegalovirus is a member of the herpes virus family that falls under the beta herpes subfamily. CMV is spherical in shape with icosahedral symmetry. The icosahedral protein capsid with an average diameter of 100 nm consists of 162 hollow … Read more Human Cytomegalovirus

Measles Virus

Measles Virus

Measles Virus Image Source: BBC Structure Measles virus is the prototypic member of the Morbillivirus genus of the family Paramyxoviridae. Measles virus is spherical with a diameter ranging from 120 to 1000 nm and has two major structural components: one is the helical ribonucleoprotein (RNP) core formed by the association of the nucleoprotein (N), phosphoprotein … Read more Measles Virus

Varicella Zoster Virus

Varicella Zoster Virus

Varicella Zoster Virus Structure of Varicella Zoster Virus Image Source: Creative Diagnostics Varicella-zoster virus (VZV) is an alphaherpesvirus that is in the same subfamily as herpes simplex virus (HSV) 1 and 2. VZV is a member of varicellovirus genus. The virion is spherical in shape with icosahedral symmetry measuring 159-200nm. The icosahedral protein capsid with … Read more Varicella Zoster Virus

Mutation- Causes, Mechanisms, Agents and Significance

Mutation- Causes, Mechanisms, Agents and Significance

Mutation- Causes, Mechanisms, Agents and Significance Mutation is a process that produces a gene or chromosome that differs from the wild type (arbitrary standard for what “normal” is for an organism). It is most commonly defined as a spontaneous permanent change in a gene or chromosome which usually produces a detectable effect in the organism … Read more Mutation- Causes, Mechanisms, Agents and Significance

Polio Virus

Polio Virus

Polio Virus Structure of Polio Virus Poliovirus is a member of a family of viruses called the Picornaviridae. Virions are spherical in shape with a diameter of about 27nm. The particles are simple in that they are composed of a protein shell surrounding the naked RNA genome. The genome is monopartite, linear ssRNA(+) genome of 7.2-8.5 kb, … Read more Polio Virus

Japanese Encephalitis (JE) Virus

Japanese Encephalitis (JE) Virus

Japanese Encephalitis (JE) Virus Structure of Japanese Encephalitis (JE) Virus Japanese encephalitis (JE) virus falls under the family Flaviviridae. The particles appear to be spherical, 50 nm in diameter, containing an electron dense core (about 30 nm diameter) surrounded by a lipid bilayer. Mature virions sediment between 170 and 210S, have a buoyant density of 1.19 … Read more Japanese Encephalitis (JE) Virus

Differences Between Bacteria and Virus (Bacteria vs Virus)

Differences Between Bacteria and Virus

Differences Between Bacteria and Virus Some of the differences between bacteria and virus are as follows: S.N. Character Bacteria Virus 1 Cell type Prokaryotic cells Acellular 2 Number of cells Single-celled No cell 3 Size Larger than viruses (0.3-2 μ) Minute (0.02-0.3 μ) 4 Microscopy Visible under Light Microscope. Visible only under an Electron Microscope. … Read more Differences Between Bacteria and Virus (Bacteria vs Virus)

Norwalk Virus (Norovirus)

Structure and Genome of Norwalk Virus

Structure of Norwalk Virus (Norovirus) The virus is non-enveloped, round, 27-nm particles with a ‘ragged’ outer edge but lacking a definite surface structure. It has a buoyant density of 1.33–1.41 g/cm3, an inability to propagate in vitro. Characteristically, Norwalk virus possesses a single capsid protein. The genome is a nonsegmented, single-stranded, positive polarity RNA genome. Ten … Read more Norwalk Virus (Norovirus)

Ebola Virus

Ebola Virus- Structure, Genome, Epidemiology, Transmission, Replication, Pathogenesis, Clinical Manifestation, Lab Diagnosis, Treatment, Prevention and Control

Structure of Ebola Virus It falls under the Filoviridae family. The virion is filamentous, enveloped measuring 800 nm length and 80 nm in diameter. It comprises of negative sense, single stranded RNA genome. Structural proteins associated with the nucleocapsid are the nucleoprotein (NP), VP30, VP35, and the polymerase (L) protein. Membrane-associated proteins are the matrix protein … Read more Ebola Virus

Rota Virus

Rota Virus- Structure, Genome, Epidemiology, Replication, Pathogenesis, Clinical Manifestation, Lab Diagnosis, Treatment, Vaccination, Prevention and Control

Structure of Rota Virus The name rotavirus is derived from the Latin word rota, meaning “wheel,” which refers to the virion’s appearance in negative-stained electron micrographs. Rotavirus fall under Reoviridae family and subfamily Sedoreovirinae, which appear more smooth, lacking the large surface projections. The virion has icosahedral symmetry and is triple layered capsid lacking an envelope … Read more Rota Virus