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

────────────────────────────────────────────┬───┬───┬───┬───┬────── OR1L1
                                            │   │   │   │   └────── OR1L6
                                            │   │   │   └────── OR1L3
                                            │   │   └────── OR1L4
                                            │   └────── OR1L8
                                            └───┬────── OR1K1
                                                └────── OR1B1