There is a paradox in the growth of scientific knowledge. As information accumulates in ever more intimidating quantities, disconnected facts and impenetrable mysteries give way to rational explanation, and simplicity emerges from chaos. Gradually the essential principles of a subject come into focus. This is true of cell biology today. Cell is a vital unit of organism and it can be considered as the anatomic and physiologic substrate of biologic phenomena. Most of the Indian Universities have recognized the importance of cell in due time and have incorporated the Cell Biology, Molecular Biology, Genetics, and Evolution in their syllabi.
This book is principally for students taking a first course in cell biology, be they undergraduates, graduate students, or medical students. Although most readers have had at least an intro0ductory biology course, the authors have attempted to write the book so that even a stranger to this branch could follow it by starting at the beginning. Most of the chapters have been updated to give the reader a current view.

