The nuclear structure is not always stable but varies from hour to hour. Thus, it is important to capture dynamic changes of the structure and function from the viewpoint of molecular dynamics. Using the latest visualizing techniques in combination with biochemical and molecular biological methods, researchers from a broad range of fields of knowledge, including chromosomal structure, nuclear transfer, RNA, nuclear membrane, transcription, and nuclear domain structures, provide an overview of the nuclear structure and current issues in nuclear dynamics. The dynamics of nuclear structures described in this book furnish the basis for a comprehensive understanding of how the higher-order organization and function of the nucleus is established and how it correlates with the expression of a variety of vital activities such as cell proliferation and differentiation. The resulting volume creates an invaluable source of reference for researchers in the field.