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Updated: Mar 20, 2026

Detection of True IgE-expressing Mouse B Lineage Cells
Published on: December 1, 2014
The discovery of IgE.
1Department of Medicine, Immunology and Allergy Unit, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
The search for allergy-mediating factors led to the discovery of immunoglobulin E (IgE) in 1967. This crucial finding revolutionized the understanding, diagnosis, and treatment of allergic diseases.
Area of Science:
- Immunology and Allergy Research
- Medical Diagnostics and Therapeutics
Background:
- The historical quest for the allergy-mediating factor, termed reagin, commenced in 1919.
- Allergic conditions like asthma were known to be linked to specific serum factors in affected individuals.
Discussion:
- The identification of immunoglobulin E (IgE) in 1967 as the reaginic factor marked a paradigm shift.
- IgE's role in mediating allergic reactions, including asthma, was definitively established.
Key Insights:
- Discovery of IgE as the primary mediator of allergic responses.
- Established IgE as a critical target for diagnostic and therapeutic interventions in allergy.
Outlook:
- Continued research into IgE's precise mechanisms in various allergic diseases.
- Development of novel IgE-targeted therapies for improved patient outcomes.
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