This book details recently developed technologies and conventionally employed cytological proceduresfor the study of X-Chromosome Inactivation. Chapters detail live imaging, bioinformatic methods, fluorescence in situ hybridization, and immunofluorescence, and procedures to optimize the study of molecular mechanism underlying X chromosome inactivation. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, X-Chromosome Inactivation: Methods Protocols aims to be useful for researchers in the field of epigenetics, chromatin, noncoding RNA, and nuclear architecture.