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The CD40-CD154 pathway is the core of humoral immune response, simultaneously promoting dendritic cell (DC) maturation and inducing effective T cell initiation [125, 127, 128]

Cross-referencing the serum and urinary protein analyses identified 2 candidate biomarkers, MILR1 and HLA-DRA, that were significantly elevated in both sample types

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(But) over the last year or two, the studies that have come back really have not shown benefit from doing supplemental vitamin D. Taking too much vitamin D can cause problems such as constipation and nausea and, in more serious cases, kidney stones and kidney damage

Meeting the challenge of long COVID