Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...
The metabolites of vitamins A and D, retinoic acid and 1,25(OH) 2 VD 3, respectively, bind to nuclear receptors and exert potent and specific immunomodulatory effects. 1,25(OH) 2 VD 3 also inhibits ...
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