RT Book, Section A1 Ryan, Kenneth J. SR Print(0) ID 1148672908 T1 Papilloma and Polyoma Viruses T2 Sherris Medical Microbiology, 7e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781259859809 LK accessbiomedicalscience.mhmedical.com/content.aspx?aid=1148672908 RD 2024/04/19 AB Historically, the papillomaviruses and polyomaviruses have been discussed together in microbiology textbooks, lumped under the category of papovaviruses. Papovaviruses are now split into two separate families: Papillomaviridae and Polyomaviridae. The unique characteristics that distinguish them from each other are shown in Table 19–1.