Spike glycoprotein egziste sou sifas nouvo coronavirus ak fasil mitasyon tankou Alpha (B.1.1.7), Beta (B.1.351), Delta (B.1.617.2), Gamma (P.1) ak Omicron (B. 1.1.529, BA.2, BA.4, BA.5). Nukleokapsid viral la konpoze de pwoteyin nukleokapsid (N pwoteyin pou kout) ak RNA. Pwoteyin N nan...
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