A weak immune system is susceptible to various diseases and infections caused by bacteria, fungus and viruses. From a trivial cold to a serious cancer, we are prone to all if the immune system is not strong enough to fight against these foreign bodies.

This text provides a comprehensive account of the human immune system: the basics, types, structure and functions of antibodies, and advanced topics such as immune deficiencies and immunotherapy. The book explains the physiological functioning of the immune system in states of both health and diseases; malfunctions of the immune system in immunological disorders (autoimmune diseases, hypersensitivities, immune deficiency, transplant rejection); the physical, chemical and physiological characteristics of the components of the immune system in vitro, in situ, and in vivo, in detail.

The text offers new insights into immunological concepts in simple, straightforward and comprehensive language, and provides clear illustrations. It includes up-to-date information on immunoprophylactic, immunodiagnostic and immunotherapeutic methods. The illustrations complement the theories, enabling students to grasp the concepts. The Review Questions at the end of each chapter help students to think critically. The book also incorporates competitive examination questions.

The book is primarily intended for undergraduate and postgraduate students of biotechnology, zoology, microbiology, biochemistry and immunology.