Welcome to the Computational Biology PBWiki Textbook! This online textbook is a collaborative effort to create a free public textbook for the emerging field of computational biology and bioinformatics. The project is initiated by faculties and students at Harvard University and its affiliated institutions. If you have any comments or suggestions please contact the site administrator X. Shirley Liu at xsliu@jimmy.harvard.edu or moderator Arjun (Raj) Manrai at manrai@fas.harvard.edu