| phylogenic analysis of the m genes of influenza viruses isolated from free-flying water birds from their northern territory to hokkaido, japan. | during 2000-2007, 218 influenza viruses of 28 different combinations of ha (h1-h13) and na (n1-n9) subtypes were isolated from fecal samples of free-flying water birds at two distant lakes in hokkaido, japan. phylogenic analysis of the matrix (m) genes of 67 strains, selected on the basis of their subtype combinations, revealed that a/duck/hokkaido/w95/2006 (h10n8) was a reassortant whose m and na genes [corrected] belonged to north american non-gull-avian and the other six [corrected] genes to ... | 2008 | 18612806 |