This film explores the complex process of human digestion, detailing how food is broken down into molecules by the digestive system. It follows the journey of food from the mouth, where it is chewed ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 88, No. 24 (Dec. 15, 1991), pp. 11320-11324 (5 pages) The gp120 envelope glycoprotein of human immunodeficiency ...