Fig. 2
From: Tracing Jomon and Yayoi ancestries in Japan using ALDH2 and JC virus genotype distributions
a Map showing the distribution of the two major JCV genotypes (CY and MY) in Japan. The areas in which CY and MY were found more frequently (i.e., at rates >75 %) are indicated as CY-rich or MY-rich areas, respectively. The area designated as the intermediate area is where the genotypes CY and MY were found at almost identical frequencies. This map was created utilizing data reported by Kitamura et al. [14]. b The geographic distribution of the ALDH2 variant. The orange area indicates where the frequency of the ALDH2 variant is over 24 % of the population. The ALDH2 mutation-rich area is central Japan. This map was created utilizing data reported by Li et al. [17]