| comparison of the distribution patterns of bk polyomavirus lineages among china, korea and japan: implications for human migrations in northeast asia. | bkv is widespread among humans, infecting children asymptomatically and then persisting in renal tissue. based on the serological or phylogenetic method, bkv isolates worldwide are classified into four subtypes (i-iv), with subtypes i and iv further divided into several genetically-distinct subgroups. since, similarly to jcv, a close relationship exists between bkv lineages and human populations, bkv should be useful as a marker to trace human migrations. to elucidate ancient human migrations in ... | 2009 | 19457167 |