This Web site contains graphic-rich tutorials for educational use by life science teachers, medical professionals, and the interested public.

Many tutorials are also available in PDF and PowerPoint formats that may be downloaded from the Web. Simply click on any title listed below and when the tutorial opens, click within the Page Options box located in the left margin. The art presented here is copyrighted and distributed free of charge for educational purposes.

If you have questions about a tutorial's content, suggestions for new topics, or other feedback on the Web site, please send an e-mail to nciucssupport@mail.nih.gov