| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Receptors, Neurotransmitter | 100 | + | |
| 2 | Receptors, G-Protein-Coupled | 76 | + | |
| 3 | Receptors, Peptide | 41 | + | |
| 4 | Receptors, Biogenic Amine | 29 | + | |
| 5 | Receptors, Immunologic | 13 | + | |
| 6 | Cysteine Loop Ligand-Gated Ion Channel Receptors | 9 | + | |
| 7 | Receptors, Purinergic | 3 | + | |
| 8 | Receptor Protein-Tyrosine Kinases | 2 | + | |
| 9 | Autoreceptors | 1 | + |