A pair of interesting and somewhat mysterious cellular organelles called centrioles is found near the nucleus of most animal cells. Each centriole is a hollow, cylindrical structure about 0.66 ft (0.2 m) in diameter and 1.31 ft (0.4 m) long made of...

A centriole is a barrel shaped organelle[1] found in most eukaryotic cells, though absent in higher plants and fungi.[2] The walls of each centriole are usually composed of nine triplets of microtubules. Deviations from this include Drosophila...

ABSTRACT Control of organelle abundance is a fundamental unsolved problem in cell biology. Mechanisms for number control have been proposed in which organelle assembly is actively increased or decreased to compensate for deviations from a set-point, but such phenomena have not been experimentally...