WHAT IS COMMON TO THE FIRST TYPE (1-st) OF AN ALLERGIC REACTIONS? Bbl6epuTe OLUH WTV HeCKOJIbKO OTBeTOB: a. In the mechanism of allergy the main role belongs to lymphokines b. A response reveals itself in 24- 48 hours after the repeated contact with the allergen C. Histamine , bradykinin, leukotrienes play the main role in the mechanism of allergic reaction d. A response reveals itself in 15- 20 minutes after the repeated contact with the allergen e. Leading role of IgE in pathogenesis

The correct answer is:<br /><br />e. Leading role of IgE in pathogenesis<br /><br />Explanation: The first type of allergic reactions, also known as immediate-type hypersensitivity reactions, are mediated by IgE antibodies. When an individual with a type I hypersensitivity reaction is exposed to an allergen, the allergen binds to IgE antibodies that are attached to mast cells and basophils. This binding triggers the release of histamine, bradykinin, and other mediators from these cells, leading to the symptoms of the allergic reaction. The response typically occurs within minutes to hours after exposure to the allergen.