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.
What is ABS Plastic? Acrylonitrile Butadiene Styrene (ABS) is an opaque thermoplastic and amorphous polymer. âThermoplasticâ (as opposed to âthermosetâ) has to do with the way the material responds to heat. Thermoplastics become liquid (i.e. have a âglass transitionâ) at a certain temperature (221 degrees Fahrenheit in the case of ABS plastic).