Protides of the Biological Fluids presents the functional approach to conformation that combines the physiological significance with physical and chemical appearance of the protein. This book discusses the technical details of purification, determination, or identification of given protein fractions. Organized into three sections, this book begins with an overview of the intramolecular cross-linked synthetic polypeptides that can be used as models for the organized spatial structure of proteins. This text then examines the polarization of fluorescence methods, which provide very sensitive hydrodynamic techniques for studying the internal organization and the rigidity of the polypeptide. Other sections consider the excretion of different classes of immunoglobulins in the external secretions of dogs. This book discusses as well the anti-coli antibody and the poliovirus neutralizing antibody activity of achlorhydric gastric juices. The final section deals with the introduction of gels as a medium for the electrophoresis of proteins. This book is a valuable resource for chemists, biochemists, and geneticists.