*2.9. Cell Viability*

Freshly isolated PMNL were incubated with a control sample with 0.1% DMSO, BRP-187 (10 µM) or NPs containing the respective amount of BRP-187 (10 µM) at 37 ◦C in PBS containing 0.1% of glucose. After 5 h the cell suspension was subjected to a Vi-CELL XR cell counter (Beckman Coulter, Lahntal, Germany), for determination of cell viability by trypan blue staining.
