Intronic Variants of the Angiotensin-Converting Enzyme 2 Gene Modulate Plasma ACE2 Levels and Possibly Confer Protection against Severe COVID-19

Figure 4

Jitter plot demonstrating the plasma ACE2 levels in healthy controls and patients with different degrees of COVID-19 disease severity. Severe patients have the highest plasma ACE2 level (shown in purple), and the mild group has the lowest (shown in green). The black dots within the error bars represent the mean ACE2 levels for each group.