Ads
related to: viruses in the cells of the human body- Patient Assistance Info
Discover If You Are Eligible To
Save On An HIV-1 Treatment Option.
- HIV Real Patient Stories
Watch The Stories Of People Who
Share Their Treatment Experiences.
- Download Patient Brochure
Find Resources With Important Info
About Treatment And Switching.
- HIV Treatment FAQs
Find Answers To Frequently Asked
Questions About HIV And Medication.
- Learn How Treatment Works
Visit The Patient Website To Learn
How An HIV-1 Treatment Works.
- Talking To Your Doctor
Find Resources To Talk To Your
Doctor About An HIV-1 Therapy.
- Patient Assistance Info
Search results
Results From The WOW.Com Content Network
The human virome is the total collection of viruses in and on the human body. [1] [2] [3] Viruses in the human body may infect both human cells and other microbes such as bacteria (as with bacteriophages). [4] Some viruses cause disease, while others may be asymptomatic.
Viruses with no viral envelope enter the cell generally through endocytosis; they “trick” the host cell to ingest the virions through the cell membrane. Cells can take in resources from the environment outside of the cell, and these mechanisms may be exploited by viruses to enter a cell in the same manner as ordinary resources.
The body's cells constantly display short fragments of their proteins on the cell's surface, and, if a T cell recognises a suspicious viral fragment there, the host cell is destroyed by 'killer T' cells and the virus-specific T-cells proliferate. Cells such as the macrophage are specialists at this antigen presentation. [156]
Often we just think of a few viruses—influenza, HIV, and now coronaviruses—but viruses are the most plentiful microbes on the planet. Of those, about 320,000 types of viruses infect mammals ...
Poliovirus infects human cells by binding to an immunoglobulin-like receptor, CD155 (also known as the poliovirus receptor or PVR) [5] [6] on the cell surface. [7] Interaction of poliovirus and CD155 facilitates an irreversible conformational change of the viral particle necessary for viral entry.
This specificity restricts the virus to a very limited type of cell. For example, the human immunodeficiency virus (HIV) infects only human T cells, because its surface protein, gp120, can only react with CD4 and other molecules on the T cell's surface. Plant viruses can only attach to plant cells and cannot infect animals.
The T cell then travels throughout the body in search of cells where the MHC I receptors bear this antigen. When an activated T cell contacts such cells, it releases cytotoxins, such as perforin, which form pores in the target cell's plasma membrane, allowing ions, water and toxins to enter.
There are some viruses that can maintain a persistent infection by infecting different cells of the body. Some viruses once acquired never leave the body. A typical example is the herpes virus, which tends to hide in nerves and become reactivated when specific circumstances arise. [25]
Ad
related to: viruses in the cells of the human body