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

────────────────────────────────────────────────────────┬───┬───┬───┬───┬───┬────── OR8B2
                                                        │   │   │   │   │   └────── OR8B3
                                                        │   │   │   │   └────── OR8B8
                                                        │   │   │   └────── OR8B12
                                                        │   │   └────── OR8B4
                                                        │   └───┬───┬────── OR8G1
                                                        │       │   └────── OR8G5
                                                        │       └────── OR8G2
                                                        └───┬───┬────── OR8D1
                                                            │   └────── OR8D2
                                                            └────── OR8D4