virus

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RNA viruses and how they contradict the central dogma

Basic Virus Structure

Basic Virus Structure

Basic Virus Structure

Viruses are, by far, the smallest organisms in the world. Viruses are

DNA or RNA . A number of viruses contain their genetic information in RNA

instead of DNA). Viruses survive and reproduce by infecting a cell and

commandeering the cellular synthetic machinery to make more viruses. Then

the viruses lyse the cell and start the cycle over again.

There is an entire class of viruses known as bacteriophages that prey

exclusively on bacteria. Many of these viruses have a common structure.

HIV, the virus that causes the disease AIDS and is the most famous virus in

This is an image of rhinovirus 14, one of the many

rhinoviruses.

What you are seeing are the interlocking proteins of the virus capsid. Each

virus structures are available: Follow this link to view

an example virus structure.

Immunology Encyclopedia

lymphocytotropic virus, called

Human Immunodeficiency Virus (HIV).

immune system that recognize and directly eliminate virus-infected

virus, the agent of AIDS. (Contrast with

lymphocytotropic virus

virus

Cell Biology Chapter

Basic virus structure

Phage Replication

Polymerase Chain Reaction - Xeroxing DNA

whether from humans, bacteria, or viruses, cannot copy a chain of DNA

Cell Basics

viruses are only alive while infecting a cell.

Lwoff's Pathways - Viral Replication

Virus is from the Latin word for "poison." The term remains an apt

one since viruses constitute one of the greatest threats to human

health. One group of viruses, Herpes simplex (HSV), is the most

HSV illustrates an interesting property of certain viruses - it can

take both active and latent forms. During the active phase, the virus

During the latent phase, it's as if the virus has gone to sleep.

replication patterns. Some viruses can only replicate by what is

forcing it to make new viruses. At some point bursting at the seams

with the viruses, the host breaks open, releasing new pathogens into

the environment. Other viruses operate differently: they enter and

host cell and using it to make viruses, the injected DNA can become

The lysogenic pathway was discovered in bacterial viruses

to leak out. The cell dies rapidly, releasing virus particles.

host cell is not killed outright, but is occupied by the virus and used

Monoclonal Antibody Technology

Substances foreign to the body, such as disease-causing bacteria and viruses

A vaccine is a preparation of killed or weakened bacteria or viruses that, when

Examples of Viral Replication Pathways

to leak out. The cell dies rapidly, releasing virus particles.

host cell is not killed outright, but is occupied by the virus and used