出典:Wiktionary
percoll (uncountable)
出典:Wikipedia
出典:『Wikipedia』 (2010/12/05 21:30 UTC 版)
Percoll was first formulated by Pertoft et al. as a tool for more efficient density separation. It is used for the isolation of cells, organelles, and/or viruses by density centrifugation. Percoll consists of colloidal silica particles of 15-30 nm diameter (23% w/w in water) which have been coated with polyvinylpyrrolidone (PVP). Percoll is well suited for density gradient experiments because it possesses a low viscosity compared to alternatives, a low osmolarity and no toxicity towards cells and their constituents.