Stem cells found in the blood and bone marrow are immature cells that develop into red and white blood cells, platelets and additional stem cells (they are not
the same as embryonic stem cells).
Not exact matches
Embryonic stem cells are scientifically and medically interesting because they are «pluripotent» (capable of generating many
cell types), but they are not the
same as totipotent single -
cell embryos.
Embryonic stem cells are produced during development by the
same process of epigenetic programming that later will produce adult
cells such
as skin and brain.
A type of «virgin birth»
stem cell could be
as powerful
as embryonic stem cells but without the
same ethical objections, and are being tested for Parkinson ’s
But the methods used to reprogram
cells can damage their DNA, and the iPS
cells may not behave in exactly the
same way
as embryonic stem cells.
The induced pluripotent
stem cells (iPSCs) that the new method produces have the
same ability
as embryonic stem cells to turn into any kind of tissue.
When Kaufman, Zon and colleagues looked to see what was different about these early cancer
cells, they found that crestin and the other activated genes are the
same ones turned on during zebrafish
embryonic development — specifically, in the
stem cells that give rise to the pigment
cells known
as melanocytes, within a structure called the neural crest.
The reprogrammed skin
cells that have led to this enthusiasm seem to have the
same properties
as the
embryonic stem cells (ESCs) found in human embryos just a few days old.
They view this
as a test run for creating human
embryonic stem cells in the
same way (and according to the team, South Korean biologist Hwang Woo Suk seems to have accidentally accomplished this feat while executing his famously fraudulent human cloning experiment).
I don't think we need the
same level of regulation
as for human
embryonic stem cells, for example, because we are not using any embryos.
They successfully converted mature mouse skin
cells into what they called induced pluripotent
stem (iPS)
cells that had the
same wide - open potential
as embryonic stem cells — which the researchers showed by turning their iPS
cells into nerve and connective tissue
cells.
Even though different
cell types were used
as the initial starting materials, and they were made to produce different sets of proteins, both groups identified and isolated
cells nearly identical to human
embryonic stem cells, and did so in the
same timeframe.
Genetic modifications in skin
cells (above) induced the
cells into what scientists call a pluripotent state — a condition that is essentially the
same as that of
embryonic stem cells.
He also discussed his current viewpoint on whether induced pluripotent
stem cells (iPS)-- which are derived from adult
cells — will have the
same potential therapeutic utility
as human
embryonic stem cells.