Forssman antibody

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Definition
  1. Noun:
    • A specific heterophile antibody: The Forssman antibody is a type of heterophile antibody. It is an immunoglobulin that reacts with antigens from a different species.
    • A diagnostic marker: This antibody is characteristically found in the blood serum of individuals suffering from infectious mononucleosis, a viral illness.
Usage and Examples
  • Noun:
    • The presence of the Forssman antibody is a key indicator in diagnosing infectious mononucleosis.
    • Laboratory tests detected Forssman antibody in the patient's blood sample, confirming the suspected case of mono.
Advanced Usage and Context
  • Clinical Diagnosis: The detection of the Forssman antibody is part of heterophile antibody tests, such as the Monospot test, used for diagnosing infectious mononucleosis. It reacts with sheep or horse red blood cells in these tests.
  • Immunological Specificity: It is named after John Forssman, who described this type of heterophile antigen-antibody system. It is distinct from the antibodies involved in the Paul-Bunnell test, another test for mononucleosis.
Variants and Related Terms
  • Heterophile Antibody (n): A broader category of antibodies that react with antigens from unrelated species. The Forssman antibody is one type.
  • Infectious Mononucleosis (n): The disease, often caused by the Epstein-Barr virus, associated with the production of the Forssman antibody.
  • Monospot Test (n): A rapid test for infectious mononucleosis that detects heterophile antibodies, including the Forssman antibody.
Synonyms
  • Heterophile Antibody: This is the general class to which the Forssman antibody belongs.
  • Sheep Cell Agglutinin: A descriptive term sometimes used in the context of the laboratory test reaction.
Notes
  • The term "Forssman antibody" is highly specialized and used primarily in medical, clinical, and immunological contexts. It is not typically used in everyday conversation.
  • It is always used as a noun. There are no phrasal verbs or idioms associated with this specific scientific term.
Noun
  1. an antibody found in the blood of someone suffering from infectious mononucleosis

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