ABSTRACTThe 2011 International Conference on Mathematical Methods and Models in Biosciences and School for Young Scientists (BIOMATH 2011) held in Sofia, 15–18 June 2011, was an international meeting that gathered researchers from four different continents and 16 different countries. BIOMATH 2011 continues a tradition of scientific meetings on biomathematics held at the Bulgarian Academy of Sciences (BAS) in Sofia since 1990. This issue of “Biotechnology and Biotechnological Equipment” contains a selection of 14 scientific papers focused on biological, biotechnological and biomedical studies.