Alloimmunization

Alloimmunization (pronounced: al-low-im-mu-ni-za-tion), also known as isoimmunization, is a condition where the immune system produces antibodies in response to foreign antigens from the same species, typically following a blood transfusion, organ transplant, or pregnancy.

Etymology

The term "alloimmunization" is derived from the Greek word "allos" meaning "other", and the Latin word "immunis" meaning "exempt". It refers to the immune system's response to foreign antigens from the same species.

Definition

Alloimmunization occurs when the immune system is exposed to foreign antigens from the same species and produces antibodies against these antigens. This can occur following a blood transfusion, organ transplant, or during pregnancy when a mother is exposed to the fetus's antigens.

Related Terms

Antigen: A substance that triggers an immune response, leading to the production of antibodies.
Antibody: A protein produced by the immune system in response to an antigen.
Blood Transfusion: A procedure where donated blood is given to a patient.
Organ Transplant: A surgical operation where a failing or damaged organ in the human body is replaced with a healthy organ from a donor.
Pregnancy: The period from conception to birth when a woman carries a developing fetus in her uterus.

External links

Medical encyclopedia article on Alloimmunization
Wikipedia's article - Alloimmunization

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Alloimmunization