http://articles.mercola.com/sites/articles/archive/2000/02/27/vitamin-d-tuberculosis.aspxSusceptibility to disease after infection by Mycobacterium tuberculosis (M. tuberculosis) is influenced by environmental and host genetic factors. Vitamin D metabolism leads to activation of macrophages and restricts the intracellular growth of M tuberculosisenCommunityServer 2008.5 SP1 (Build: 31106.3070)