Cell-Free System
Synonyms
Cell Free System
Cell-Free Systems
Cellfree System
Cellfree Systems
System, Cell-Free
System, Cellfree
Systems, Cell-Free
Systems, Cellfree
A fractionated cell extract that maintains a biological function. A subcellular fraction isolated by ultracentrifugation or other separation techniques must first be isolated so that a process can be studied free from all of the complex side reactions that occur in a cell. The cell-free system is therefore widely used in cell biology. (From Alberts et al., Molecular Biology of the Cell, 2d ed, p166)