| prevalence of human papillomavirus type 16 variants in the federal district, central brazil. | we report the prevalence of human papillomavirus type 16 (hpv-16) variants in women with cervical lesions from the federal district, central brazil. we analyzed 34 hpv-16 samples, identifying the sequence variations of e6 and l1 genes and correlating variant frequency with disease status. the most prevalent hpv-16 variant was the european (50%), followed by asian-american (41.2%), african-1 (5.9%), and african-2 (2.9%). european and non-european variants appeared in equal frequencies among the c ... | 2004 | 15273800 |