The distribution of −237 C/T polymorphism among patients, healthy contacts and volunteers.

<p>^<b>a</b> Subjects included in the study;</p><p>^<b>b</b> Polymorphism position ;</p><p>^<b>c</b> Individuals with C nucleotide at −237 position;</p><p>^<b>d</b> Individuals with T nucleotide at −237 position ;</p><p>^<b>e</b> Total number of individuals investigated;</p><p>^<b>f</b> Percentage of individuals.</p><p>^<b>g</b> pulmonary tuberculosis patients ;</p><p>^<b>h</b> healthy patients contacts ;</p><p>^<b>i</b> Healthy laboratory Volunteers.