| Compounds | Concentration (µg/ml) | ||||||||||
| 720 | 360 | 180 | 90 | 45 | 22.5 | 11.3 | 5.6 | 2.8 | +ve | −ve | |
| TCNP | + | + | + | + | + | + | − | − | − | + | − |
| ECNP | + | + | + | + | + | − | − | − | − | + | − |
| CNP | + | + | − | − | − | − | − | − | − | + | − |