cell-mediated immunity

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cell-mediated immunity

[¦sel ¦mē·dē‚ād·əd i′myü·nəd·ē]
(immunology)
Immune responses produced by the activities of T cells rather than by immunoglobulins.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
This coincides with the approximate time frame for Type IV hypersensitivity reactions.
IgE or IgG antibodies from a sensitised patient will bind appropriate allergens in the membrane (30), (31) Nasal challenge test Performed to identify the causative agent in patients with suspected rhinitis (22) Lung function test Breathing test that measures the quantity and speed of exhaled air Exhaled nitric oxide Employed in diagnosing asthma, monitoring response to therapy, evaluating current symptom control, and predicting exacerbations of asthma (32) Patch test Suspected allergens placed on patient's back induce a type IV hypersensitivity reaction via specific T lymphocytes which is read after 72 hours to determine allergic reaction (8)
A positive reaction, indicating type IV hypersensitivity, is defined as a SI greater than 3 and an equivocal reaction is a SI between 2 and 3.
The long duration of skin contact and the high concentration of PPD (up to 16%) dramatically increase the risk of contact dermatitis, Reactions are typically type IV hypersensitivity presenting as pustular dermatitis, eczemarous and vesicular dermatitis, lichenoid reaction, or generalized dermatitis.
The most common are the Type I and Type IV hypersensitivity reactions.
This condition can be difficult to diagnose and is often confused with type IV hypersensitivity reaction, eczema, herpes simplex virus (HSV), and burns, potentially leading to suspicion of child abuse.