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- one of the pair of cytoplasmic organelles that form the points of focus of the spindle during cell division
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
- small central granule of most centrosomes
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
- Centrioles are paired barrel-shaped organelles located in the cytoplasm of animal cells near the nuclear envelope. Centrioles play a role in organizing microtubules that serve as the cell's skeletal system. They help determine the locations of the nucleus and other organelles within the cell.