TABLE 2.

Frequencies of m3KOΔnef mutations detectable in virus populations at necropsy^a

nt position of original mutation	Frequency (%) in animal:
	cy0381	cy0348	cy0382
1316	99.8	95.7	96.6
1481	64.4	<5	47.6
1510	99.7	<5	48.3
2467	99.7	99.6	99.4
2723	99.6	84.1	99.8
2850	99.8	95.5	99.7
2860	99.9	96.6	99.5
3721	99.9	99.7	99.9
4260	99.8	92.6	99.8
4945	99.5	99.5	99.4
5815	100.2	99.9	99.8
6199	98.9	97.0	96.5
6639	99.4	65.6	99.7
6923	97.4	11.6	98.1
6925	97.4	11.6	98.1
7058	99.8	99.8	99.8
8390	98.0	11.3	97.7
8750	56.4	6.8	87.4
8850	92.1	52.3	25.5
9110	99.7	99.7	99.5
9176	85.0	5.2	5.3
9181	84.0	46.7	6.0

^aThe nucleotide (nt) positions in the m3KOΔnef inoculum virus that had the original mutations, relative to SIVmac239, are shown. The frequencies of the individual variants, relative to SIVmac239, are shown for each of the virus populations isolated from the three animals. This percentage reflects the frequency that the original mutation from the m3KOΔnef inoculum was still found in the virus population at necropsy.