Many of the contributors are from the Center for Biotechnology Information at the US National Institutes of Health, and others are scientists and instructors from around North America and Britain. Their work can be used as a classroom text, a tutorial, or a laboratory bench reference. No date is noted for the first edition, but the second reinforces concepts that have survived from the first, and incorporates new approaches and algorithms for analyzing genes and proteins. New chapters discuss expressed sequence tags, sequence assembly, comparative genomics, large-scale genome analysis, and BioPerl. Answers to the problems are available on a web site. Annotation c. Book News, Inc., Portland, OR (booknews.com)