Scope and Contents Demonstrates colorful molecule models that move and rotate. Molecules include Carboxypeptidase, Trypsin, and Deoxyribonucleic Acid (DNA). Credits: By Thomas Ferrin and Robert Langridge, University of California, San Francisco. Scenes in this film were generated on an Evans & Sutherland Picture System 2 graphics display using a calligraphic shadow mask color monitor. Graphics made at the UCSF Computer Graphics Laboratory.