Sources | Medically Reviewed on 08/07/2019 Reviewed by Carol DerSarkissian on August 07, 2019

IMAGES PROVIDED BY:

1) Science Source, Dr P. Marazzi, Dr. Harout Tanielian, Biophoto Associates / Photo Researchers Inc.

2) London Scientific Films

3) Dr. P. Marazzi / Photo Researchers, Inc.

4) Juergen Berger / Photo Researchers, Interactive Medical Media LLC , Fitzpatrick's Color Atlas & Synopsis of Clinical Dermatology

5) Science Source/Photo Researchers, Fitzpatrick's Color Atlas & Synopsis of Clinical Dermatology

6) BSIP/Photo Researchers Inc

7) Interactive Medical Media LLC

8) Interactive Medical Media LLC, Fitzpatrick's Color Atlas & Synopsis of Clinical Dermatology, Dr. Harold Fisher/Visuals Unlimited

9) Eye of Science/Photo Researchers Inc

10) Dr. M.A. Ansary / Photo Researchers, Inc., Science Source, Fitzpatrick's Color Atlas & Synopsis of Clinical Dermatology

11) Bildagentur RM/Tips Italia

12) Bruce Forester/Photographer's Choice

13) IMA / Photo Researchers Inc

14) Dr. M.A. Ansary / Photo Researchers, Inc., David M. Phillips / Photo Researchers, Inc, Fitzpatrick's Color Atlas & Synopsis of Clinical Dermatolog

15) Dr. M.A. Ansary / Photo Researchers, Inc.

16) Judith Glick / Phototake

17) Clarissa Leahy/Photographer's Choice

18) Christoph Martin/Lifesize

19) George Diebold/Photographer's Choice

20) Michael Winokur/Workbook Stock

21) John Lamb/Stone

22) UHB Trust/Stone

23) Alan Powdrill/Stone

REFERENCES:

American Social Health Association.

American Social Health Association's National Herpes Resource Center.

Centers for Disease Control and Prevention web site.

FDA web site.

Fleming, et al. The New England Journal of Medicine, Oct. 16, 1997.

March of Dimes web site.

Merck Manual, 17th edition.

National HIV Testing Resources.

National Institute of Allergy and Infectious Diseases.

National Institutes of Health.

The Nemours Foundation's Kids Health web site.

U.S. Dept. of Health and Human Services.