The book "Mechanisms of leukemia process in cattle in the Nizhny Novgorod region", written by Alexander Alexandrovich Orlov, is a unique study that immerses the reader in the complex world of veterinary medicine and zoology. This work is not only scientific, but also practical, which makes it a valuable source of information for veterinarians, zootechnicians, students of agronomic and veterinary universities, as well as anyone interested in animal health and agriculture. The book is devoted to the study of the leukemia process, which poses a serious threat to the health of cattle. The author examines in detail the mechanisms of development of this disease, its impact on animal productivity and the economy of agriculture in the Nizhny Novgorod region. At a time when agriculture is facing many challenges, such as climate change and new diseases, Orlov’s work is becoming especially relevant. The reader will be able to learn about how various environmental factors, genetic predispositions and farming methods affect the spread of leukemia among cows. The author's style is distinguished by scientific rigor and at the same time accessibility. Orlov uses clear and understandable language, which allows even those who are not specialists in veterinary medicine to realize the importance of the issues raised. The book is replete with examples from practice, which makes theoretical calculations more visual and applicable. Readers interested in topics such as veterinary oncology, infectious diseases of animals and zoohygiene will find in this work a lot of useful information. Topics covered in the book go beyond veterinary medicine alone. Orlov raises issues related to sustainable agriculture, ecology and animal health in general. He draws attention to the need for an integrated approach to solving problems related to animal diseases, and offers recommendations for the prevention and treatment of leukemia. This work can become the basis for further research and development in the field of veterinary medicine, as well as serve as the basis for the creation of new methods of diagnosis and treatment. The book will be of interest not only to specialists, but also to a wide range of readers, including farmers, livestock owners and everyone who cares about animal health. Under conditions where the quality of products directly depends on animal health, the knowledge presented in this book can be invaluable. Readers who are looking for information about veterinary diseases, methods of their diagnosis and treatment, as well as modern approaches to agriculture, will find in the "Mechanisms of the leukemia process" many answers to their questions. Alexander Alexandrovich Orlov is an author who has already established himself in scientific circles . His previous work also addresses veterinary medicine and animal health, which confirms his in-depth knowledge and experience in this field. By reading this book, you will not only gain new knowledge, but also be able to appreciate the author’s contribution to the development of veterinary science. Thus, the “Mechanisms of the Leukemia Process in Cattle in the Nizhny Novgorod Region” is not just a book, but a whole world that opens doors to complex mechanisms that govern animal health and agricultural efficiency. This work will be an important step towards understanding and solving the urgent problems facing the modern agricultural sector.