Table 1 Amino acid substitutions in the MA virus.

From: Adaptive amino acid substitutions enable transmission of an H9N2 avian influenza virus in guinea pigs

Segment

Position

WT

MA

PB2

340

R

K

588

A

V

PB1

48

K

Q

368

V

I

628

M

L

PA

343

S

A

356

K

R

423

V

I

554

V

I

NP

217

V

I

239

V

M

HA

235

M

Q

254

K

R

NA

72

R

K

NS1

127

N

T

216

T

P

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