Influenza viruses possess two main surface antigens: hemagglutinin (HA), which facilitates viral entry, and neuraminidase (NA), which promotes progeny virion release.
流感病毒表面有兩種主要抗原：血球凝集素（HA），促進病毒進入細胞；神經胺酸酶（NA），促進子代病毒顆粒釋放。
| Front | Influenza viruses what 2 main antigens? Functions of each? |
|---|---|
| Back | Contain hemagglutinin (promotes viral entry) and neuraminidase (promotes progeny virion release) antigens. |
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