In biology, particularly cell biology, the term organelle is used to describe any one of a number of types of subcellular structures, historically identified through the use of some form of microscopy.
A few large organelles probably originated from endosymbiont bacteria:
... age 18 and over, there are 89.3 males.
The median income for a household in the town is $75,076, and the median income for a family is $79,745. Males have a media ...