Ви повинні увійти в систему, щоб мати доступ до кошика
H2 blockers inhibiting allergic response. Antigens (green triangles) enter the body, bind with IgE on mast cells (middle left), and trigger the release of histamine (green balls). Histamine attaches to receptors on blood vessels, causing vasodilation, edema, and inflammation. H2 blocker drugs (yellow balls) block histamine from engaging the receptors.