Cell is considered to be the basic unit of life. The branch of biology which studies the structure and function of the cell is known as cell biology or cytology. The basic concerns of cell biology are the physiological properties, metabolic processes, life cycle, signaling pathways, chemical composition and interactions of the cell with their environment. It encompasses both prokaryotic and eukaryotic cells. Therefore, it functions on microscopic as well as molecular level. The knowledge of how cells work and its components is fundamental to all biological sciences. It is also essential to the on-going research in bio-medical. Genetics, molecular biology, immunology and biochemistry are some fields which are closely related to the research in cell biology. The various studies that are constantly contributing towards advancing technologies and evolution of the field of cell biology are examined in detail in this book. With state-of-the-art inputs by acclaimed experts of this field, this book targets students and professionals.