| serotonin → HasA → effect | 0.45 | |
| serotonin → HasA → muscle contraction | 0.37 | |
| serotonin → HasA → various functions | 0.33 | |
| serotonin → HasA → endocrine regulation | 0.30 | |
| serotonin → HasA → hand | 0.29 | |
| serotonin → HasA → calming effect | 0.28 | |
| serotonin → HasA → short half-life | 0.16 |