第一個疑惑就是就是武漢病毒通過ACE2受體進入細胞。ACE 2 is highly expressed in testis, renal and cardiovascular tissues and notably also in tissues from the gastrointestinal system including ileum, duodenum, jejunum, caecum and colon. Expression of ACE 2 was highest in ileum (copy number=282 000) of all the 72 tissues evaluated. Expression of ACE 2 was limited in central nervous system and lymphoid tissues.