characterization of human papillomavirus type 120: a novel betapapillomavirus with tropism for multiple anatomical niches. | recent studies indicate that human papillomaviruses (hpvs) from the genera betapapillomavirus and gammapapillomavirus are abundant in the human oral cavity. we report the cloning and characterization of a 7304 bp hpv120 genome from the oral cavity that is related most closely to hpv23 (l1 orf, 83.7 % similarity), clustering it in the genus betapapillomavirus (β-pv). hpv120 contains five early and two late genes, but no e5 orf. hpv120 was detected from heterogeneous human biological niches, inclu ... | 2012 | 22552941 |