Lymphocyte surface marker from periferal blood of patients with active cavitary tuberculosis was observed.
CD3×/HLA-DR×cell and CD25×/ CD4×cell were increased in cases with good clini cal course. Disease course was prolonged in cases with no increase of such cells.
CD4×/HLA-DR×cell was increased in cases with far advanced pulmonary lesions.
Thus, analysis of lymphocyte surface marker from periferal blood of patients with tuberculosis seemed to reflect immunological status of patients.