Carbonic anhydrase isoenzyme I and II activity in red blood cells
| Total CA (U/mg Hb) | CAII | CAI | |
|---|---|---|---|
| Normal ranges (mean (SEM)): total CA 16.4 (3.0) U/mg Hb, CAII 8.1 (2.0) U/mg Hb. | |||
| CAI levels calculated following addition of NaI.12,13 | |||
| Case A | 30.0 | 16.2 | 13.8 |
| Case B | 12.5 | 6.2 | 6.3 |
| Father | 17.3 | 8.4 | 8.9 |
| Mother | 15.6 | 7.7 | 7.9 |
| Case C | 7.7 | 1.1 | 6.6 |
| Case D | 9.7 | 0.6 | 9.1 |
| Father | 11.8 | 4.1 | 7.6 |
| Mother | 11.7 | 4.5 | 7.2 |