Perfusate levels of endothelial glycocalyx breakdown products and matrix metalloproteinases (MMPs) over time during human ex vivo lung perfusion (EVLP). The start time point varied for lungs and is detailed in Table 1
. Lungs 1–4 were experimental lungs that underwent prolonged perfusion. Tx: lungs transplanted after EVLP; No Tx: lungs not transplanted after EVLP; pg/ml: pictograms per ml; ng/ml: nanograms per ml.