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Re: Non-Specialized cell
Someone, whose message I lost, asked about the term
"specialized cell." I would say that these are cells
that have acquired through successive division certain
propertises that make them unique. The changes are
probably controlled by the cellular environment and
neighboring cells. ("Hey, I'm going to be a brain
cell. You have to become a liver cell!") For example,
mature neurons can transmit electrical impulses along
their membranes due to the release of biochemical
reactants at the end plates of dendrites of adjacent
cells.
http://www.doereport.com/displaymonograph.php?MID=115
Neutrons cannot contract like muscle cells, because
their intracellular structure has changed. Both
neurons and muscle cells are specialized.
A non-specialized cell might be the myelocytes
http://www.vghtpe.gov.tw/~hema/hematopoitic%20cell%20differentiation/myeloblast.htm
which can differentiate into a number of white cell
types
http://www.vghtpe.gov.tw/~hema/hematopoitic%20cell%20differentiation/myeloid%20series.htm
Of course, each and every cell has, and still has, the
potential to become any specialized cell in the body.
The potential exists in the DNA of the cell. It
appears that as cells become more specialized, they
loose the ability to regress to a precursor form.
=====
+++++++++++++++++++
"Everyone is ignorant, only on different subjects."
Will Rogers
-- John
John Jacobus, MS
Certified Health Physicist
e-mail: crispy_bird@yahoo.com
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