(A, B) CD11b+CD33+HLA-DR− cells (3 × 104 cells/well) isolated from lung cancer patients (n = 6) 24 h after surgery were cocultured with (A) dexmedetomidine (DEX) or (B) dexmedetomidine and yohimbine (DEX + YOH). This evidence concerns the gene CD33 and lung carcinoma.