Dendrogram, based on comparisons of the VP3 protein, illustrating the genetic relationships among selected representatives of each of the picornaviruses genera. Abbreviations: HAV, hepatitis A virus; HRV, human rhinovirus; EV, enterovirus; CBV, coxsackie B virus; SVDV, swine vesicular disease virus; PV, poliovirus; EMCV, encephalomyocarditis virus; TMEV, Theiler’s murine encephalomyelitis virus; FMDV, foot-and-mouth disease virus.