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r'Iwenty-nine patients were studied to determine the number of CJ).j+ Tscell subsets in Iranian allergic rhinitis patients. The result was compared with that a/twenty-four nonatopic controls. The number of11 and CDS+T cell')and levels ofspeafic IgE and /g(;4 against weed pollens were also studied The number of lymphocyte subset, tltat is, CD-/+ C/)29+and C1Jf CJ)451t cells were determined hy doublelabeling immunofluorescence assay. The results showed that the number ofClJ-I+ CD.f.5It cells to; significantly higher in the patients (626 ± 251.-1cell')per one micro/iter ofperipheral blood) than in control subjects (479A ± 78.2 cell per one microliter) (P