The book "Protocols for Nucleic Acid Analysis by Nonradioactive Probes, Second Edition" provides a comprehensive introduction to the fundamental preparation protocols for analyzing nucleic acids using non-radioactive methods. It covers a wide range of innovative applications and offers detailed chapters on topics such as nucleic acid extraction, blot preparation, and labeling nucleic acids with non-radioactive haptens. The second edition integrates modern fluorescent techniques, including Real-Time PCR and microarrays, enabling users to implement non-radioactive protocols in the lab with minimal adjustments and achieve faster results. The protocols are structured in the proven format of the "Methods in Molecular Biology" series and provide step-by-step instructions, an introduction to the underlying principles, lists of required equipment and reagents, as well as troubleshooting tips and advice on avoiding common issues.