After a century of study, physicists have theories — but they’re still not 100% sure.
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 ...
The large increase and subsequent decline of unauthorized immigrant workers in recent years have raised questions about the impact of these changes on local labor markets across the United States. New ...
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