Like a surgeon separating conjoined twins, cells have to be careful to get everything just right when they divide in two. Otherwise, the resulting daughter cells could be hobbled, particularly if they end up with too many or two few chromosomes. Successful cell division hangs on the formation of a dip called a cleavage furrow, a process that has remained mysterious. Now, researchers at Johns Hopkins have found that no single molecular architect directs the cleavage furrow’s formation; rather, it is a robust structure made of a suite of team players.
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