Betulinic acid shows anticancer activity against equine melanoma cells and permeates isolated equine skin in vitro oleh Lisa A. Weber, Jessica Meißner, Julien Delarocque, Jutta Kalbitz, Karsten Feige, Manfred Kietzmann, Anne Michaelis, Reinhard Paschke, Julia Michael, Barbara Pratscher, Jessika-M. V. Cavalleri