This book is the first in a series compiling highly cited articles in nanomedicine recently. The series is edited by Lajos P. Balogh, a prominent nanotechnology researcher and journal editor. The first book content is about nanotechnology in cancer research. It also includes a wide variety of must-know topics that will appeal to any researcher involved in nanomedicine, macromolecular science, cancer therapy, and drug delivery research. These 31 articles collected here have already acquired more than 3500 citations (i.e., over a hundred on average), highlighting the importance and recognized professional interest of the scientists working in this field.