1. Extracellular RNAs - A New Awareness of Old Perspectives Noah Sadik, Lilian Cruz, Alessandra Gurtner, Rodosthenis S. Rodosthenous , Sophie A. Dusoswa, Olivia Ziegler, Thomas Sebastiaan Van Solinge, Zhiyun Wei, Ane Miren Salvador Garicano, Bence Gyorgy, Marike Broekman, and Leonora Balaj 2. Overview of Protocols for Studying Extracellular RNA and Extracellular Vesicles Julia Small, Roger Alexander, and Leonora Balaj