ILLUSTRATION CREDITS 
Cover and page 4 — Based on a figure 
in Curtis, H., Biology (4th edition). 
Worth Publishers, New York, 1983. 
Pages 6, 9 — National Library of 
Medicine, NIH. 
Page 1 3 — (upper left) National Institute 
of Diabetes, Digestive, and Kidney 
Diseases, NIH; (lower right) Palade, 
G., Yale University, New Haven, 
Connecticut. 
Pages 16, 20 — Based on figures in 
Darnell, J., Lodish, H., and Baltimore, 
D., Molecular Cell. Biology. Scientific 
American Books, Inc., New York, 1986. 
Pages 23, 26 — Watson, J.D., Tooze, 
J., and Kurtz, D.T., Recombinant DNA: 
A Short Course. W.H. Freeman and 
Company, New York, 1983. 
Page 25 — Yunis, J.J., Human Pathology 
12:494. W.B. Saunders Company, 
Philadelphia, 1981. 
Pages 28 (top), 30 (top), 32, 36 (top) 
— Friend, D.S., University of California, 
San Francisco. 
Pages 28 (bottom), 30 (bottom), 36 
(bottom) — Based on figures in Luciano, 
D.S., Vander, A.J., and Sherman, J.H., 
Human Anatomy and Physiology (2nd 
edition). McGraw-Hill Book Company, 
New York, 1983. 
Pages 35, 47, 50, 52, 54 — Based on 
figures in Alberts, B., Bray, D., Lewis, J., 
Raff, M., Roberts, K., and Watson, J.D., 
Molecular Biology of the Cell. Garland 
Publishing, Inc., New York, 1983. 
Page 40 — Fujiwara, K., National 
Cardiovascular Center Research Institute, 
Suita, Osaka, Japan. 
Page 43 — Based on a figure in The 
Washington Post, December 28, 1986. 
Illustrations on cover and on pages 4, 
16, 20, 28, 30, 35, 36, 43, 47, 
50, 52, and 54 were drawn by 
Trudy Nicholson. 
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