# refseq assembly genbank ucsc NC_078449.1 3 MN661049.1 NC_078449v1 NC_078450.1 4 MN661050.1 NC_078450v1 NC_078451.1 1 MN661047.1 NC_078451v1 NC_078452.1 2 MN661048.1 NC_078452v1