| IgE | <immunology> Class of immunoglobulin (188 kD) associated with immediate type hypersensitivity reactions and helminth infections. Present in very low amounts in serum and mostly bound to mast cells and basophils that have an immunoglobulin E specific Fc receptor (FceR). Immunoglobulin E has a high carbohydrate content and is also present in external secretions. Heavy chain of epsilon type. (30 Mar 1998) |
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| receptors, IgE | Specific molecular sites on the surface of b- and T-lymphocytes which combine with iges. Two subclasses exist: low affinity receptors (fc epsilon ri) and high affinity receptors (fc epsilon rii). (12 Dec 1998) |
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