This is a highly technical book. It is not recommended for the lay public as too much of it requires extensive prior training in microbiology in order to comprehend this extensive work. There are only a few pages written in common and understandable text. Dr. Mattman was one of the great pioneers of modern biology and without a doubt, a great contributor to the betterment of mankind. This is an important book that awakens researchers to a better explanation as to the etiology of diseases. Pleomorphism is clearly vindicated and brings, once again, into question the validity of the Pasteur Germ Theory which is the foundation for modern medicine, long ago demonstrated to be erroneous. Politics and medicine make for strange bed fellows when a method of conducting business has been well-established. The data in this book brings to the researcher the tools required to look at the cause of disease in an entirely different light.