Related Experiment Video

Updated: Apr 28, 2026

A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma
06:34

A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma

Published on: June 4, 2017

9.1K

Acute allergic reaction after composite pollen ingestion

S H Cohen, J W Yunginger, N Rosenberg

    The Journal of Allergy and Clinical Immunology
    |October 1, 1979
    PubMed
    Summary

    Bee pollen can trigger severe allergic reactions in sensitive individuals due to cross-reactivity with Compositae pollens like dandelion. This highlights risks for atopic patients consuming certain health foods.

    More Related Videos

    Humanized Mediator Release Assay as a Read-Out for Allergen Potency10:22

    Humanized Mediator Release Assay as a Read-Out for Allergen Potency

    Published on: June 29, 2021

    4.9K
    Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber08:47

    Symptom Assessment of Patients with Allergic Rhinitis Using an Allergen Exposure Chamber

    Published on: March 3, 2023

    3.9K

    Related Concept Videos

    Allergic Reactions02:06

    Allergic Reactions

    Overview
    26.3K
    Allergic Drug Reactions01:27

    Allergic Drug Reactions

    Allergic reactions related to drugs are hypersensitivity responses driven by the immune system and bear no connection to the drug's therapeutic action. While drugs in isolation do not trigger an immune response, they can interact with endogenous proteins to form antigens. These antigens stimulate lymphocytes to produce antibodies. IgE-type antibodies attach themselves to mast cells. Upon subsequent exposure to the same stimulus, the antigen-antibody interaction is initiated, unleashing...
    1.6K
    Hypersensitivities01:30

    Hypersensitivities

    Hypersensitivity, also known as a hypersensitivity reaction or allergic reaction, is a condition where the body's immune system reacts abnormally to a foreign substance. Such substances, that cause hypersensitivity are referred to as an allergen, could be something typically harmless to most people, like pollen or certain foods.
    Types of Hypersensitivities
    Hypersensitivity reactions are categorized into four types: Type 1, Type 2, Type 3, and Type 4. Each type has a distinct mechanism...
    7.2K
    Drug Toxicity: Allergic Reactions01:30

    Drug Toxicity: Allergic Reactions

    Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial...
    206
    Allergic Reactions: Anaphylaxis01:30

    Allergic Reactions: Anaphylaxis

    Anaphylaxis is a severe, life-threatening hypersensitivity reaction mediated by Immunoglobulin E (IgE) antibodies. When IgE binds to allergens, it triggers the release of mediators– histamine, leukotrienes, and prostaglandins from mast cells and basophils. These mediators cause vasodilation, edema, and inflammation, leading to various symptoms.The primary allergens causing anaphylaxis include food items (e.g., peanuts, shellfish), drugs (e.g., penicillin, asparaginase, corticotropin,...
    278
    Hypersensitivity Reactions: Immune-Complex Reactions01:19

    Hypersensitivity Reactions: Immune-Complex Reactions

    Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum...
    266