In cell biology, an organelle is one of several structures with specialized functions, suspended in the cytoplasm of a eukaryotic cell. Organelles were historically identified through the use of some form of microscopy and were also identified through the use of cell fractionation.
A few large organelles probably originated from endosymbiont bacteria:
Other organelles include:
Other related structures:
Last updated: 02-08-2005 16:27:06