Table 1.

Frequency of the − 762T/C polymorphism of the P2X₇ gene in patients with tuberculosis and healthy contacts.

	Patients		Control subjects
Genotype or allele	n	Frequency	n	Frequency
Genotype
TT	52	0·5745	51	0·4636
TC	32	0·3404	44	0·4
CC	8	0·0851	15	0·1364
Total	92		110
Allele
T	140	0·7447	146	0·6636
C	48	0·2553	74	0·3363
Total	188		220