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CD4/CD8 ratio of BALF T cells in DM/PM patients with corticosteroid-resistant and corticosteroid-sensitive IP. BALF cells from DM/ PM patients with corticosteroid-resistant IP (n = 6) and corticosteroid- sensitive IP (n = 16) and from controls without IP (n = 12) were stained with anti-CD4-FITC, anti-CD8-PerCP, and anti-CD3-PE antibodies and analysed by FACS. • DM patients, ▪ PM patients, ▴ lung cancer patients without IP.
