Table 1. Distribution of mutations in pvdhfr among field isolates from different area.

Sampling areas	pvdhfr haplotypes
	13	57	58	61	117	173	n	(%)
Yunnan	I	L	R	M	T	I	80	36.36%
	I	I	R	M	T	I	52	23.64%
	I	L	S	M	T	I	12	5.45%
	I	I	S	M	T	I	7	3.18%
	I	L	R	T	T	I	2	0.91%
	I	L	R	T	T	F	1	0.45%
	I	L	S	T	T	I	1	0.45%
	I	F	S	T	T	I	1	0.45%
	I	F	R	T	N	I	18	8.18%
	I	F	S	T	N	I	11	5.00%
	I	F	R	T	N	L	2	0.91%
	L	F	R	T	N	I	1	0.45%
	I	L	R	T	N	I	1	0.45%
	I	F	R	M	N	I	1	0.45%
	I	F	S	T	S	I	19	8.64%
	I	L	R	T	S	I	4	1.82%
	I	F	R	T	S	I	4	1.82%
	I	L	S	T	S	F	3	1.36%
Hainan	I	F	R	T	N	I	58	100%
Central China	I	F	R	M	T	I	2	0.71%
	I	L	R	M	T	I	2	0.71%
	I	F	S	T	N	I	137	48.41%
	I	F	S	T	S	I	142	50.18%

Codon mutations are indicated in bold type;

n = the number of isolates;

% = the percent of total isolates;