Human papillomavirus (HPV) type 16 DNA demonstrated in a cervical smear by in situ hybridization. The dark dots represent detection of HPV DNA sequences by the DNA probe. Source: Pathogenic Viruses, Sherris Medical Microbiology, 6e Citation: Ryan KJ, Ray C. Sherris Medical Microbiology, 6e; 2014 Available at: http://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/books/1020/rya_ch19_f006.png&sec=56993058&BookID=1020&ChapterSecID=56968657&imagename= Accessed: November 01, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved