Table 2.

Frequency of the A1513C polymorphism in the P2X₇ gene exon 13 in patients with tuberculosis and healthy contacts.

	Patients		Control subjects
Genotype or allele	n	Frequency	n	Frequency
Genotype
AA	53	0·759	70	0·6364
AC	33	0·2289	38	0·3455
CC	8	0·012	2	0·0182
Total	94		110
Allele
A	139	0·8735	178	0·8091
C	49	0·1265	42	0·1909
Total	188		220