P13-19 Enhanced study design for acute inhalation studies with hydrophobic surface treated particles to reveal the issue of suffocation through strong agglomeration of particles in the nose of test animals. (1st September 2022) - Bruer, G.G.; Krueger, N.; Weber, K.; Warfving, N.; Vitali, A.; Nolde, J.; Schuster, T.; Creutzenberg, O.; Janssen, P.; Wessely, B.; Stintz, M.; Moise, V.; et al.