The main goal guiding the preparation of this new edition has been to reflect the revised syllabus of the subject as per Indian Nursing Council. Accordingly all the chapters have been rewritten. New chapters on cytoskeleton immunochemistry free radicals and antioxidants and specialized proteins have been introduced. Several new questions have also been added at the end of each chapter. All the practical exercises have been given at the end so as to make it more convenient for the students. A major goal thus continues to provide a textbook to the students of nursing that describes and illustrates the basics of biochemistry in a concise interesting manner.