Search Here

Antigen

Antigen, substance that is capable of stimulating an immune response, specifically activating lymphocytes, which are the body’s infection-fighting white blood cells.

Antigen
  • A substance that causes the production of an antibody that binds to the antigen to harm, neutralize, or kill it.
  • The presence of certain antigens in blood cells is the basis for blood typing of transfusions. The antigens that are present in the tissue allow for donor-recipient match in transplant medicine.
email_subscription

Receive all our future posts instantly in your inbox. Enter your email to enroll.

Types of Antigens:

  1. Foreign Antigens (or heteroantigens) originate from outside the body. Examples include parts of or substances produced by viruses or microorganisms (such as bacteria and protozoa), as well as substances in snake venom, certain proteins in foods, and components of serum and red blood cells from other individuals.
  2. Autoantigens, on the other hand, originate within the body. Normally, the body is able to distinguish self from nonself, but in persons with autoimmune disorders, normal bodily substances provoke an immune response, leading to the generation of autoantibodies. An antigen that induces an immune response—i.e., stimulates the lymphocytes to produce antibody or to attack the antigen directly—is called an immunogen.

Related Articles:

  • Nervous tissue is the term for groups of organized cells in the nervous system, which […]
  • Muscle tissue is composed of cells that have the special ability to shorten or contract […]
  • Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, […]
  • Morphology, peripheral blood smear, biochemical tests and preliminary investigations for the diagnosis of iron deficiency […]
  • Ion selective electrode (ISE) is an analytical technique used to determine the activity of ions […]
  • List of Basic Calculations/Formulas Used in Clinical and Medical Laboratories for Generate Results and any […]
  • The presence of two or more embryos in the uterus. Twin and higher gestations have […]
  • Stillbirth is the clinical term for stillbirth used to describe the death of a baby […]


Possible References Used

Leave a Reply

Your email address will not be published. Required fields are marked *

Navigate: Home | Categories | About Us | Authors | Contact Us | Submit News Tips | Advertise | Write for Us
Find us on: Facebook | Twitter | Tumblr | YouTube | Reddit | Pinterest | Instagram
More: RSS | Sitemap | Back to: Top
© 2018-2021 Lab Tests Guide