TABLE 1.

Distribution of HHV-6 sequences in cell fractions sorted from the peripheral blood of subjects with high-copy-number latent viral infections

Patient	HHV-6 DNA in sorted cell fractionsa
	CD16+ granulocytes	CD14+ monocytes	CD19+ B lymphocytes	CD4+ T lymphocytes	CD8+ T lymphocytes
1	10	10	102	102	103
2	102	102	103	103	104
3	10	10	102	102	103

^aMonocyte and lymphocyte populations were >98% pure, while sorted CD16⁺ granulocytes were >99% pure. Tenfold dilutions of 10⁵ FACS-purified cells (10⁵, 10⁴, 10³, 10², and 10 cells) were tested for HHV-6 DNA by PCR, and the minimal numbers of positive cells are given.