索南1/26 发的新paper https://www.biorxiv.org/content/10.1101/2020.01.26.919985v1.full
2019-nCoV 和Sars病毒 一样要结合人体的ACE2 receptor 才能感染.
这篇paper发现亚裔（男性）标本的ACE2表达水平远高于其它所有人（包括非洲裔和白
种人），在平均值的五倍以上。
“A comparison between eight individual samples demonstrated that the Asian
male one has an extremely large number of ACE2-expressing cells in the lung.
”
“We also noticed that the only Asian donor (male) has a much higher ACE2-
expressing cell ratio than white and African American donors (2.50% vs. 0.47
% of all cells). This might explain the observation that the new Coronavirus
pandemic and previous SARS-Cov pandemic are concentrated in the Asian area.
