Fig. 1

ACE levels in patient samples. Citrated plasma samples from 100 pulmonary clinic patients were analyzed for ACE activity using ZPHL substrate (A) and immunoreactive ACE protein levels using mAb 9B9 (B). Data are expressed as % of parameters of ACE levels (activity or the amount of immunoreactive ACE protein from value for control pooled plasma samples from healthy controls (green bars)). Bars with statistically significant changes in % of ACE precipitation are colored as follows: increase more than 20% (orange), > 50% (brown), more than twofold (red), decrease more than 50% (yellow). Shown are mean values from 2 to 5 experiments (each made in triplicates); SD (not shown for clarity) was less than 10%. Correlation coefficients are displayed in the figure