Figure 1
From: Cathelicidin antimicrobial protein, vitamin D, and risk of death in critically ill patients
Correlations between plasma hCAP18, 25D metabolites, and PTH. Total 25D represents the sum of all 25-hydroxyvitamin D (both D2 and D3), including 25D bound to DBP, albumin, and circulating freely; bioavailable 25D is the sum of albumin-bound and free 25D; free 25D is the circulating fraction of 25D that is neither bound to DBP nor albumin. DBP, D-binding protein; hCAP18, human cathelicidin antimicrobial protein-18; PTH, parathyroid hormone.