If you're seeing this message, it means we're having trouble loading external resources on our website.

Agar veb-filtrlardan foydalanayotgan boʻlsangiz *.kastatic.org va *.kasandbox.org domenlariga ruxsat berilganligini tekshirib koʻring.

Asosiy kontent

Viruslar evolyutsiyasi

Virus evolyutsiyasi va genetik xilmaxillik. Dori vositalariga rezistent OIV. Gripp virusining qayta shakllanishi.
Saralash:
Biology is brought to you with support from the Amgen Foundation