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- https://bio.libretexts.org/Courses/Manchester_Community_College_(MCC)/BIOL_106%3A_Essentials_of_Anatomy_and_Physiology_(Anzalone)/10%3A_The_Lymphatic_and_Immune_Systems/10.06%3A_Disorders_of_the_Immune_SystemAn allergy is a disorder in which the immune system makes an inflammatory response to a harmless antigen. Any antigen that causes allergies is called an allergen. Common allergens include pollen, dust...An allergy is a disorder in which the immune system makes an inflammatory response to a harmless antigen. Any antigen that causes allergies is called an allergen. Common allergens include pollen, dust mites, mold, specific foods such as peanuts, insect stings, and certain medications such as aspirin. Autoimmune diseases occur when the immune system fails to recognize the body's own molecules as self and attacks them, causing damage to tissues and organs.
- https://bio.libretexts.org/Workbench/Principles_of_the_Human_Body/18%3A_Immune_System/20.6%3A_Disorders_of_the_Immune_SystemAn allergy is a disorder in which the immune system makes an inflammatory response to a harmless antigen. Any antigen that causes allergies is called an allergen. Common allergens include pollen, dust...An allergy is a disorder in which the immune system makes an inflammatory response to a harmless antigen. Any antigen that causes allergies is called an allergen. Common allergens include pollen, dust mites, mold, specific foods such as peanuts, insect stings, and certain medications such as aspirin. Autoimmune diseases occur when the immune system fails to recognize the body's own molecules as self and attacks them, causing damage to tissues and organs.
- https://bio.libretexts.org/Bookshelves/Microbiology/Microbiology_(OpenStax)/19%3A_Diseases_of_the_Immune_System/19.01%3A_HypersensitivitiesAn allergy is an adaptive immune response, sometimes life-threatening, to an allergen. Hypersensitivity reactions are classified by their immune mechanism.
- https://bio.libretexts.org/Courses/Canada_College/Human_Biology_Biol_011_Textbook/17%3A_Immune_System/17.06%3A_Disorders_of_the_Immune_SystemAn allergy is a disorder in which the immune system makes an inflammatory response to a harmless antigen. Any antigen that causes allergies is called an allergen. Common allergens include pollen, dust...An allergy is a disorder in which the immune system makes an inflammatory response to a harmless antigen. Any antigen that causes allergies is called an allergen. Common allergens include pollen, dust mites, mold, specific foods such as peanuts, insect stings, and certain medications such as aspirin. Autoimmune diseases occur when the immune system fails to recognize the body's own molecules as self and attacks them, causing damage to tissues and organs.
- https://bio.libretexts.org/Bookshelves/Human_Biology/Human_Biology_(Wakim_and_Grewal)/20%3A_Immune_System/20.6%3A_Disorders_of_the_Immune_SystemAn allergy is a disorder in which the immune system makes an inflammatory response to a harmless antigen. Any antigen that causes allergies is called an allergen. Common allergens include pollen, dust...An allergy is a disorder in which the immune system makes an inflammatory response to a harmless antigen. Any antigen that causes allergies is called an allergen. Common allergens include pollen, dust mites, mold, specific foods such as peanuts, insect stings, and certain medications such as aspirin. Autoimmune diseases occur when the immune system fails to recognize the body's own molecules as self and attacks them, causing damage to tissues and organs.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Microbiology_(Liu_et_al.)/24%3A_Hypersensitivites/24.04%3A_Type_IV_HypersensitivitiesThis page explains Type IV hypersensitivity, mediated by T cells, with three subtypes: CD4 TH1-mediated (delayed-type reactions like tuberculin tests), CD4 TH2-mediated (linked to asthma and allergic ...This page explains Type IV hypersensitivity, mediated by T cells, with three subtypes: CD4 TH1-mediated (delayed-type reactions like tuberculin tests), CD4 TH2-mediated (linked to asthma and allergic rhinitis), and CD8 CTL-mediated (involving tissue rejection and apoptosis). It also covers historical aspects and methods for tuberculosis testing related to this hypersensitivity type.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Microbiology_(Liu_et_al.)/24%3A_HypersensitivitesBee stings and other allergens can cause life-threatening, systemic allergic reactions. Allergies are just one example of how the immune system—the system normally responsible for preventing disease—c...Bee stings and other allergens can cause life-threatening, systemic allergic reactions. Allergies are just one example of how the immune system—the system normally responsible for preventing disease—can actually cause or mediate disease symptoms. In this chapter, we will further explore allergies and other disorders of the immune system, including hypersensitivity reactions, autoimmune diseases, transplant rejection, and diseases associated with immunodeficiency.
- https://bio.libretexts.org/Courses/Folsom_Lake_College/BIOL_440%3A_General_Microbiology_(Panoutsopoulos)/07%3A_Allergies_and_Autoimmune_diseases/7.01%3A_Diseases_of_the_Immune_System/7.1.01%3A_HypersensitivitiesAn allergy is an adaptive immune response, sometimes life-threatening, to an allergen. Hypersensitivity reactions are classified by their immune mechanism.
- https://bio.libretexts.org/Courses/Butte_College/BC%3A_BIOL_2_-_Introduction_to_Human_Biology_(Grewal)/Text/20%3A_Immune_System/20.6%3A_Disorders_of_the_Immune_SystemAn allergy is a disorder in which the immune system makes an inflammatory response to a harmless antigen. Any antigen that causes allergies is called an allergen. Common allergens include pollen, dust...An allergy is a disorder in which the immune system makes an inflammatory response to a harmless antigen. Any antigen that causes allergies is called an allergen. Common allergens include pollen, dust mites, mold, specific foods such as peanuts, insect stings, and certain medications such as aspirin. Autoimmune diseases occur when the immune system fails to recognize the body’s own molecules as self and attacks them, causing damage to tissues and organs.
- https://bio.libretexts.org/Courses/Clinton_College/BIO_403%3A_Microbiology_(Neely)/07%3A_Allergies_and_Autoimmune_diseases/7.01%3A_Diseases_of_the_Immune_System/7.1.01%3A_HypersensitivitiesAn allergy is an adaptive immune response, sometimes life-threatening, to an allergen. Hypersensitivity reactions are classified by their immune mechanism.
- https://bio.libretexts.org/Courses/North_Central_State_College/BIOL_1550%3A_Microbiology_(2025)/24%3A_Hypersensitivites/24.05%3A_Hypersensitivity_Pneumonitis_and_SummaryAn allergy is an adaptive immune response, sometimes life-threatening, to an allergen. Hypersensitivity reactions are classified by their immune mechanism.
