Typically, cells that replicate and divide do so
with spindle fibers that are generated from the
centriole. However, many neurons (nerve and brain
cells) do not have centrioles and so do not
divide. One interesting thing to keep in mind
though is that recently studies have suggested
that generation of new neurons can occur in
certain parts of the brain (called "adult
neurogenesis"). The process for generating these
new neurons is a little different from cell
division however, since they arise from stem
cells, which are pluripotent.
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