Non-specificity of packaging of ssRNA into rotavirus cores in vitro, Lane 1: DLPs; lane 2: native RV cores; lane 3: cores + EGTA; lane 4: cores + EGTA + 32P-labelled RV RNA 11 + packaging mixture; lane 5: as lane 4 + RNase I; lane 6: RV RNA11; lanes 7–9: treatment as in lanes 4–6, respectively, using 32P-labelled HIV-2 RNA751; lanes 10–12: treatment as in lanes 4–6, respectively, using 32P-labelled HIV-2 RNA1104.