Receptors

Major nodes: ClassI | OR1/3/7 | OR2/13 | OR2M/T/V | OR4/12 | OR5/8/9 | OR5A/AN | OR6/10/11 | OR10D/G/S | OR14 | OR51/52 | Schiff6

────────────────────────────────────┬───┬───┬───┬───┬───┬────── OR13F1
                                    │   │   │   │   │   └────── OR13D1
                                    │   │   │   │   └───┬───┬───┬────── OR13C3
                                    │   │   │   │       │   │   └────── OR13C8
                                    │   │   │   │       │   └───┬───┬────── OR13C2
                                    │   │   │   │       │       │   └────── OR13C5
                                    │   │   │   │       │       └────── OR13C9
                                    │   │   │   │       └────── OR13C4
                                    │   │   │   └────── OR13J1
                                    │   │   └────── OR13H1
                                    │   └────── OR13G1
                                    └────── OR13A1