. "The complete nucleotide sequence of RNA segment 1 of influenza virus A/NT/60/68, corresponding to the PB2 protein, has been determined. It is 2341 nucleotides long, encoding a predicted product of 759 amino acids with a net charge of +27 1/2 at neutral pH. The predicted amino acid sequence has been compared to the equivalent sequences in influenza viruses A/PR/8/34 and A/WSN/33. Evolutionary divergence, assuming a direct lineage from A/PR/8/34 and allowing for \"laboratory drift\", is 0.08% per year. The alignment of RNA segment 10 of A/NT/60/68 with segments 1 and 3 is completed, confirming that it is a mosaic of regions from these two segments." . . . "Nucleic Acids Res." . "Brownlee G.G." . "Jones K.L." . "Huddleston J.A." . "1983"^^ . "1555-1566" . "The sequence of RNA segment 1 of influenza virus A/NT/60/68 and its comparison with the corresponding segment of strains A/PR/8/34 and A/WSN/33." . "11" . "doi:10.1093/nar/11.5.1555" .