Animal Virology consists of papers presented in a meeting which considered broad issues and advances in animal virology and tumor viruses. This book is divided into nine parts, representing the nine sessions of the meeting. Five of the nine sections deal particularly with viruses known to be oncogenic in animals, and one of these covers explicitly human oncornaviruses. The other four sections describe the processes common to all viruses: replication, protein synthesis, and persistence, wherein emphasis is given to negative strand viruses and plant viruses.