图4.
SARS-CoV-2与SARS-CoV S蛋白氨基酸序列同源性比对
“:”表明该列位点发生同型改变；“.”表明该列位点发生异型改变；16~685氨基酸残基；686~1273氨基酸残基.SARS-CoV:严重急性呼吸综合征冠状病毒.
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