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May 1977

Thymus Lymphocytes of the Peripheral Blood in Patients With Alopecia Areata

Arch Dermatol. 1977;113(5):688. doi:10.1001/archderm.1977.01640050148037

To the Editor.—  Previous authors have reported depression of peripheral thymus lymphocytes (T-cells) in atopic dermatitis.1,2 Atopic dermatitis is frequently associated with another autoimmune disease, alopecia areata (AA). 3 We evaluated T-cell levels in 60 patients with AA who were between the ages of 2 and 52 years. T-cell levels in AA were compared to 51 normal controls.4 The mean percentage of T-lymphocytes in AA was 58.9% compared with the normal control population of 74.9%. The T-cell number per

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