<Tr> <Td_colspan="2"> Components of a typical centrosome: <Ol> <Li> Centriole </Li> <Li> Mother centriole </Li> <Li> Daughter centriole </Li> <Li> Distal ends </Li> <Li> Distal appendages </Li> <Li> Subdistal appendages </Li> <Li> Proximal ends </Li> <Li> Microtubule triplets </Li> <Li> Interconnecting fibers </Li> <Li> Microtubules </Li> <Li> Pericentriolar material </Li> </Ol> </Td> </Tr> <Ol> <Li> Centriole </Li> <Li> Mother centriole </Li> <Li> Daughter centriole </Li> <Li> Distal ends </Li> <Li> Distal appendages </Li> <Li> Subdistal appendages </Li> <Li> Proximal ends </Li> <Li> Microtubule triplets </Li> <Li> Interconnecting fibers </Li> <Li> Microtubules </Li> <Li> Pericentriolar material </Li> </Ol> <P> In cell biology a centriole is a cylindrical cell structure composed mainly of a protein called tubulin that is found in most eukaryotic cells . An associated pair of centrioles, surrounded by a shapeless mass of dense material, called the pericentriolar material, or PCM, makes up a compound structure called a centrosome . </P> <P> Centrioles are present in the cells of most eukaryotes, for example those of animals . However, they are absent from conifers (pinophyta), flowering plants (angiosperms) and most fungi, and are only present in the male gametes of charophytes, bryophytes, seedless vascular plants, cycads, and ginkgo . </P>

Where is the centrioles located in a cell
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