An “unchecked” rise in the availability of products that contain nicotine came under the spotlight as MPs heard that the ...

Sidebar: Nicotine Receptor Subunits. The nicotinic acetylcholine receptor (nAChR) gene family encodes ten α subunits (α1-10), four ß subunits (ß1-4), and single γ, δ, and ε subunits.