such as "Introduction", "Conclusion"..etc
August 2008 -- Cells are intrinsically artistic. When the right signals tell a cell to
divide, it usually splits down the middle, resulting in two identical
daughter cells. (Stem cells are the exception to the rule.) This
natural symmetry is visible on the macroscopic scale as well. All
living creatures, be they mushrooms or humans, are visibly symmetric, a
product of our cells’ preference for equilibrium.
Scientists at the MBL’s Whitman Center for Visiting Research are
curious to know what cues tell a cell to divide at the center. Fred
Chang, professor of microbiology at Columbia University, his
postdoctoral student Nicolas Minc, and David Burgess, professor of
biology at Boston College, are placing sea urchin eggs in snug,
microscopic chambers shaped like triangles, squares, rectangles, stars,
and ice cream cones to see whether the cell will still split 50-50.
A cell’s shape, which is naturally circular, is known to play an
important role in where it divides. “We’re trying to figure out the
plane of division when cells are placed in oddly shaped chambers,” Dr.
Chang says. “Is it in the same place or way off the middle?”
Cell division is an ancient process. All multicellular organisms
have similar proteins for the task, so any information gathered from
the sea urchin research is relevant to human biology as well. Chang and
Burgess hope to apply their findings to the established theories of
cell division or possibly come up with a model of their own.
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