Assertion: machupo virus's rna | /r/HasProperty | extracted using the qiamp viral rna mini kit
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text: At indicated time points, a virus titers in the supernatants were determined by virus TCID 50 , as described in Fig. 2; b production of IFN-β was detected in supernatant solutions using the VeriKine Human IFN BETA ELISA Kit (PBL assay sciences); and c intracellular RNA was extracted using the QIAmp Viral RNA Mini kit (Qiagen).