Dendrimers belong to the class of nanoparticles and are promising tools in nanomedicine. This book provides a compact, up-to-date description of methods useful in studying biological properties of dendrimers. It focuses on biological properties of dendrimers and creates a practical guide that reviews the methods used to study these aspects of dendrimers. There is a need to describe a set of methods applied to characterise different types of dendrimers. Such standardisation will hopefully help to compare different families of dendrimers in the future. This book presents a methodological approach and provides useful tips how to study dendrimers.