Table 2. Number of PNGSs in gp120 V3, C3 and C4 regions of HIV-1 clade C variants from patients at different disease stages.

		Number of PNGSs
Disease stage		C3	C4	V3
ES	Mean	2.75	1.71	1.00
	Median	3.00	2.00	1.00
	Range	2–4	0–2	0–2
CS	Mean	2.96	1.71	0.96
	Median	3.00	2.00	1.00
	Range	1–4	1–2	0–1
LS	Mean	2.67	1.83	0.96
	Median	3.00	2.00	1.00
	Range	2–4	1–2	0–1

ES  =  Early disease Stage; CS  =  Chronic disease Stage; LS  =  Late disease Stage.