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
                └────── TAAR2