Figure 2From: Plasma levels of surfactant protein D and KL-6 for evaluation of lung injury in critically ill mechanically ventilated patients Baseline biomarker levels and lung injury score. Scatter plots of baseline levels of surfactant protein D (SP-D), Clara cell protein (CC16), KL-6 and soluble receptor for advanced glycation end products (sRAGE) as a function of lung injury score (LIS). The correlation is expressed as Spearman's rho (ρ).Back to article page