Calcified tissue international
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Vitamin D, a modulator of macrophage function, can activate human anti-mycobacterial activity. Vitamin D deficiency is therefore associated with a higher risk of tuberculosis (TB) infection, as indicated by several observations. ⋯ Third, the incidence of TB is higher among subjects with relatively low serum vitamin D levels, such as the elderly, uremic patients, and Asian immigrants in the U. K.