FIG. 1.

Correlation between the results of the NASBA assays and the number of pp65 antigen-positive cells. The antigenemia results are divided into four groups according to the amount of pp65 antigen-positive cells/50 × 10³ leukocytes: 0, 1 to 10, 11 to 50, and >50. The total number of samples in each of these groups is marked above the graph. The NASBA results are also divided into four groups in which the IE NASBA and pp67 NASBA results are either positive or negative. The NASBA results are expressed as a percentage of the number of antigenemia-positive samples and are represented by a differently hatched bar. The absolute number of NASBA results is indicated on the left side of each bar.