# refseq assembly genbank ucsc NC_043669.1 RNA2 KT950837.1 NC_043669v1 NC_043670.1 RNA3 KT950838.1 NC_043670v1 NC_043671.1 RNA4 KT950839.1 NC_043671v1 NC_043672.1 RNA1 KT950836.1 NC_043672v1