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1-8, 1-9: © McGraw-Hill Education/Al Telser, fotógrafo; 1-10: © McGraw-Hill Education/Dennis Strete, fotógrafo; 1-11: © Ed Reschke; 1-12a), 1-12b): © Ray Simons/Science Source; 1-12c): © Ed Reschke; 1-13a): © Victor P. Eroschenko; 1-18, 1-19a): © McGraw-Hill Education/Al Telser, fotógrafo; 1-20b): © Ed Reschke; 1-21: © Southern Illinois University/Science Source.
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3-3: © SPL/Science Source; 3-4: © Don W. Fawcett/Science Source; 3-5a): © Science Photo Library/Getty Images; 3-5b): © Biophoto Associates/Science Source; 3-6: © Dennis Kunkel/Phototake; 3-7: © Dr. Jan Schmoranzer/Science Source; 3-9a): © EM Research Services, Newcastle University; 3-11a), 3-12a): © Oxford Scientific/Getty Images; 3-27 (todas): © Ed Reschke; 3-28a): © Don W. Fawcett/Science Source; 3-29: © SPL/Science Source.
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6-22b): © Don W. Fawcett/Science Source.
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Figuras 7-7, 7-22: © Don W. Fawcett/Science Source.
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8-8: © Hank Morgan/Science Source; 8-9: © Du Cane Medical Imaging Ltd./Science Source; 8-17: © Russell Kightley/SPL/Science Source; 8-18 (ambas): © CG inspiration/Getty Images; 8-19b): © McGraw-Hill Education/Karl Rubin, fotógrafo.
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10-10: © Steve Gschmeissner/Science Source; 10-14a): © Cheryl Power/Science Source; 10-30a): © Steve Allen/Getty Images; 10-37b): © Ominkron/Science Source.
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11-1b): © Victor P. Eroschenko; 11-22: © McGraw-Hill Education/Al Telser, fotógrafo; 11-24: © Dr. M. A. Ansary/Science Source; 11-26: © Biophoto Associates/Science Source.
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12-2: © Victor P. Eroschenko; 12-3b): © Victor B. Eichler, Ph.D.; 12-6a): © C. F. Armstrong/Science Source; 12-7b) (izquierda): © Dr. Rosalind King/SPL/Science Source; 12-7b) (derecha): © Biophoto Associates/Science Source; 12-9a): contenido fotográfico C. F. Armstrong/Science Source. Foto de la ilustración por David A. Tietz/Editorial Image, LLC; 12-33: © Victor P. Eroschenko; 12-35a): © McGraw-Hill Education/Dennis Strete, fotógrafo.
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13-2: © Cheryl Power/Science Source; 13-6 (todas): © Stuart Fox; 13-8: © David M. Phillips/Science Source; 13-12: © McGraw-Hill Education/Karl Rubin, fotógrafo; 13-28: © Don W. Fawcett/Science Source; 13-30: © Universal History Archive/Getty Images; 13-31a): © Biophoto Associates/Science Source.
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14-10: © John Greim/Science Source; 14-18: © Zephyr/Science Source; 14-22: © Kul Bhatia/Science Source; 14-29: © McGraw-Hill Education.
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15-22: © Dr. Andrejs Liepins/SPL/Science Source; 15-24 (ambas): © SIU Biomed/Custom Medical Stock; 15-25a): ...