Main Page

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

Today's featured picture

An mRNA vaccine is a type of vaccine that uses a copy of a molecule known as messenger RNA (mRNA) to produce an immune response. The vaccine transfects molecules of synthetic RNA into dendritic cells, where the vaccine functions as mRNA, causing the cells to build foreign protein that would normally be produced by a pathogen (such as a virus) or by a cancer cell. These protein molecules stimulate an adaptive immune response that teaches the body to identify and destroy the corresponding pathogen or cancer cell. This animated video illustrates how immunization with an mRNA COVID-19 vaccine stimulates an immune response against COVID-19 infection.

Video credit: Swiss Academy of Natural Sciences

Other areas of Wikipedia

  • Community portal – Bulletin board, projects, resources and activities covering a wide range of Wikipedia areas.
  • Help desk – Ask questions about using Wikipedia.
  • Reference desk – Serving as virtual librarians, Wikipedia volunteers tackle your questions on a wide range of subjects.
  • Site news – Announcements, updates, articles and press releases on Wikipedia and the Wikimedia Foundation.
  • Village pump – For discussions about Wikipedia itself, including areas for technical issues and policies.

Wikipedia's sister projects

Wikipedia is hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other projects:

Wikipedia languages