Effect of Silymarin and Harpagoside on Inflammation Reaction of BEAS-2B Cells, on Ciliary Beat Frequency (CBF) of Trachea Explants and on Mucociliary Clearance (MCC) - Boeckenholt, Corinna; Begrow, Frank; Verspohl, Eugen J. (Planta Medica, 2012)