Quantitative assessment of NET bound elastase employing a specific ELISA in identical experimental setting as described in Figure 1. Similarly, to immunostaining, a significant reduction of NET bound elastase was observed in TLR4 silenced LPS primed MSCs when co-cultured with activated neutrophils as opposed to high NET bound elastase in non-silenced LPS primed MSCs co-cultured with activated neutrophils. Statistical analysis was performed using one way ANOVA, values are represented as mean ± SEM, three biological replicates. 