Estimation of Lymphocyte Subpopulations in the Peripheral Blood of Patients with Sarcoidosis

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Abstract
Lymphocyte subpopulations in the peripheral blood of 36 sarcoidosis patients and 36 age‐ and sex‐matched controls were determined, using the sheep erythrocyte rosette (SRBC‐R) technique and immunofluorescence staining with whole rabbit anti‐human immunoglobulin antisera. In the patient group the total number of lymphocytes, SRBC‐R lymphocytes, and IgM‐positive lymphocytes was reduced in comparison to in the control group. In the patient group no correlation could be found between any of the lymphocyte subpopulations and disease stage, cutaneous involvement of the disease, or cutaneous reactivity to purified protein derivative and dinitrochlorobenzene.