Fig. 1From: Canine caliciviruses of four serotypes from military and research dogs recovered in 1963−1978 belong to two phylogenetic clades in the Vesivirus genusElectron microscopy of negative-stained canine calicivirus isolate W191R. The virus was purified with ultracentrifugation, stained with 2% phosphotungstic acid and examined with a Hitachi HU 12 electron microscopeBack to article page