Fig. 2From: No effect of 25-hydroxyvitamin D supplementation on the skeletal muscle transcriptome in vitamin D deficient frail older adultsMinimal effect of calcifediol and placebo on skeletal muscle gene expression in vitamin D deficient frail older adults. Volcano plot showing the relation between signal log ratio (log2[fold-change], x-axis) and the -log10 of the IBMT P-value (y-axis) for the effect of calcifediol and placebo on the skeletal muscle transcriptome. The dotted lines show the threshold for fold-change of 2, and P-value of 0.001Back to article page