ERX7763947 COG-UK/PHWC-PGPI36/PHWC:211223_NB552169_0225_AHT2LNBGXK ERP121228 PRJEB37886 ERS10282630 SAMEA12676277 AMPLICON VIRAL RNA PCR Nextera XT|Internal Nextera XT (reduced volume) NextSeq 550 artic_primer_version 4