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. Author manuscript; available in PMC: 2012 Jul 1.

Published in final edited form as: Infect Genet Evol. 2011 Mar 5;11(5):803–811. doi: 10.1016/j.meegid.2011.02.021

Table 2. Evolutionary rates and dN/dS ratios of eight H1N1pdm viral segments.

Gene	Mean evolutionary rate^*		d_N/d_S ratio

	04/09- 03/10	04-05/09	04/09- 03/10	04-05/09	Reference swine virus
PB2	4.56	2.60	0.18	0.15	0.11
PB1	4.38	2.34	0.15	0.21	0.06
PA	3.65	2.45	0.25	0.11	0.06
HA	6.17	3.67	0.42	0.32	0.21
NP	3.69	2.59	0.10	0.18	0.05
NA	3.76	3.65	0.23	0.26	0.18
MP	3.87	2.55	0.19	0.19	0.05
NS	4.34	2.62	0.83	2.15	0.23

^*

× 10^-3 substitutions per site per year