Table 4. Genotypic patterns of HIV-1_IIIB selected by FNC and 3TC.

Mutation site	Mutation frequency(%)
	FNC				3TC
	P-5	P-11	P-16	P-21	P-5	P-11	P-16	P-21
M184I	3.03	66.67	97.14	95.83	4.76	45.83	25.80	47.83
M184V	0	0	0	2.08	0	45.83	70.97	52.17
L214F	30.30	76.67	94.29	100	33.33	8.33	3.23	26.09
N519S	6.06	54.05	74.29	70.83	4.76	4.17	3.23	0