| Similarity | Rank | |
|---|---|---|
| neurotransmitter | 0.905 | 35288 |
| acetylcholine | 0.896 | 55829 |
| NMDA | 0.887 | 89989 |
| serotonin | 0.885 | 18868 |
| dopamine | 0.875 | 20815 |
| excitatory | 0.875 | 83741 |
| cholinergic | 0.870 | 88546 |
| neurotransmitters | 0.869 | 32872 |
| norepinephrine | 0.867 | 48622 |
| glutamate | 0.859 | 44758 |
| dopaminergic | 0.855 | 78727 |
| inhibitory | 0.854 | 40723 |
| tryptophan | 0.854 | 53808 |
| adrenergic | 0.853 | 99859 |
| glycine | 0.851 | 81868 |
| Serotonin | 0.847 | 61679 |
| monoamine | 0.840 | 84399 |
| Dopamine | 0.839 | 75238 |
| adenosine | 0.838 | 62814 |
| receptors | 0.831 | 13875 |
| melatonin | 0.828 | 27894 |
| Melatonin | 0.824 | 55486 |
| phenylalanine | 0.823 | 81370 |
| agonist | 0.820 | 48851 |
| histamine | 0.817 | 49266 |