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.
How is ABS made? ABS is most commonly polymerized through the process of emulsion (the mixture of multiple products that donât typically combine into a single product). A well known example of an emulsified product is milk. ABS is also created, albeit less commonly, by a patented process known as continuous mass polymerization.