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

────────────────────────────────────────┬───┬───┬───┬────── OR7G1
                                        │   │   │   └────── OR7G2
                                        │   │   └────── OR7G3
                                        │   └────── OR7E24
                                        └───┬───┬───┬────── OR7A10
                                            │   │   └────── OR7A17
                                            │   └────── OR7A2
                                            └────── OR7A5