Main article: Nicotinic acetylcholine receptors. The nAChRs are ligand-gated ion channels, and, like other members of the cys-loop ligand-gated ion channel superfamily, are composed of five protein subunits symmetrically arranged like staves around a barrel.
Acrylonitrile butadiene styrene, otherwise known as ABS plastic, is a lightweight material popularly used in children's toys. There are two types: one suited for extrusion molding and one for injection molding. LEGO blocks are made from ABS plastic because it is so light and durable. Continue Reading.
1 ABS solvent cement will also work, but may alter the shape of the material's surface.  Imitation glass, cheap toys, CD cases, and similar brittle, often clear plastic is usually polystyrene and can be glued using a number of adhesives. For best results, use a poly cement or a glue advertised for plastic bonding.