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Transcriptional profiling of retinol metabolism in TB infected lung. Expression of vitamin A metabolism (ALDH1A2 and DHRS9) and activation (NPC2 and CYP27A1) genes as well as DC (CD1B) and macrophage (CD163) markers in human caseous TB versus normal lung tissue (A) and rabbit lung 2 and 16 weeks after M. tuberculosis infection (B) as measured by gene microarray. P values by one-way ANOVA. *, P < 0.05; **, P < 0.01; ***, P < 0.001.
