Receptors

Major nodes: Class I | OR1/3/7 | OR2/13 | OR4 | OR5/8/9 | OR6/10/11 | OR10D/G/S | OR12 | OR14-like | Olfactory TAARs

────────────────────┬────── TAAR5
                    └───┬───┬────── TAAR6
                        │   └────── TAAR9
                        └────── TAAR8