| subgroup determination of group a rotaviruses recovered from piglets in nigeria. | subgroup analysis using subgroup-specific monoclonal elisa revealed a preponderance of subgroup 2-specific antigens of group a porcine rotaviruses over subgroup 1. of 113 polyacrylamide gel electrophoresis-positive test samples, obtained from 4 states of nigeria, 31 (27.4%) and 45 (39.8%) were determined to have subgroup 1 and 2 specificities, respectively. however, 37 (32.7%) test samples could not be classified into any of the known group a rotavirus subgroups. these "unclassifiable" samples p ... | 1995 | 8833268 |