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
            └────── TAAR1