Concentration of EC50 for each agonist
| Agonist | EC50 | P value | |
| Normal pregnancy | IUGR | ||
| Arachidonic acid | 0.064 | 0.283 | <0.0001 |
| Adenosine-diphosphate | 21 | 54 | 0.0007 |
| Collagen | 0.052 | 0.427 | 0.0973 |
| Epinephrine | 231.4 | 3839 | 0.0015 |
| Thrombin-receptor activating protein | 10.27 | 71.54 | <0.0001 |