PAGE analysis of human rotavirus dsRNA. PAGE analysis of the dsRNA genome extracted from stool suspensions taken from children with acute diarrhea is shown. All samples (lanes 1, 2, 3, and 6) exhibited the typical 4-2-3-2 pattern of group A rotavirus. Lane 4, bovine rotavirus strain UK; lane 5, extraction procedure applied to a pool of stool suspensions taken from healthy children. Numbers denote positions of dsRNA segments.