Figure 3From: Discovering human history from stomach bacteriaRelationships of human polyoma JC virus (JCV) subtypes found in humans from different parts of the world [7]. Letters refer to individual subtypes. (a) The hypothesized pattern of spread of JCV subtypes through the world (excluding the Americas); (b) an inferred phylogeny of JCV subtypes, assuming an African origin for the virus. Adapted from [7].Back to article page