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ROC curve of the number of CD4+ T cells for CMVR after chemotherapy in 128 ALL patients. The number of CD4+ T cells possessed a high diagnostic value for CMVR after chemotherapy in ALL patients, the area values under the curve of the number of CD4+ T cells was 0.920 ± 0.029, P < 0.001. ALL: Acute lymphocytic leukemia; CMVR: Cytomegalvirus retinitis; ROC: Receiver operating characteristic curve.
