ACE2 and vascular disorder: The mean ± standard deviation relative ACE2 activity was significantly lower in the vasculopathy patients (64.8 ± 16.4, n = 18) compared with that in the healthy subjects (86.6 ± 32.2, n = 26, P = 0.0055) and control patients (165.1 ± 99.1, n = 16, P = 0.0010).