José Miguel Ferreras is a full professor in Biochemistry and Molecular Biology at the Department of Biochemistry and Molecular Biology and Physiology, University of Valladolid, Spain. In 1989, he obtained his Ph.D. degree in Biochemistry at the Department of Biochemistry and Molecular Biology and Physiology, University of Valladolid, Spain. His research is in ribosome-inactivating proteins, immunotoxins, protein synthesis inhibition, ribotoxins, and structure-activity relationship.