She's also parted with Republicans over social issues like stem cell research and abortion.
Scientists are very excited by the announcement of these findings, that cells that look and act like stem cells can be created from skin cells (known in science as fibroblasts).
But new research found that, like stem rust, stripe rust increases its genetic variability by reproducing sexually on the leaves of another host plant (the barberry), making itself more adaptable and more deadly.
These iPS cells, like stem cells derived from embryos, can be turned into many different kinds of cells, and researchers believe they eventually could be used to regenerate tissue for organs and repair damage.
The technique used by Green and Hollister is part of a burgeoning field called regenerative medicine, which involves engineering therapies -- using things like stem cells, or "body parts" constructed out of biological material -- to harness the body's ability to heal itself.
That technique for generating embryonic-like stem cells (called induced pluripotent stem cells, or iPS cells) bypassed the need for transferring the cells into eggs, as Wilmut had done, and also averted the ethical issues attached to extracting stem cells from embryos as Thomson had done.
While cloning stem cells is a technical breakthrough, there's already a method of deriving embryonic-like stem cells that doesn't require the use of embryos at all: induced pluripotent stem (IPS) cells, said Dr. George Daley, who is director of the Stem Cell Transplantation Program at Children's Hospital Boston and an international expert in stem cells.
So they felt, well, hmm, if we can boost them in skin stem cells, maybe they'll start behaving like embryonic stem cells.
Today's tests concentrate on the stalk-like brain stem, in charge of basics such as breathing, sleeping and waking.
In November, we witnessed a landmark achievement when scientists discovered a way to reprogram adult skin cells to act like embryonic stem cells.
Francesca Fusco, a Manhattan dermatologist, calls the venom "a new flavor of the month, " much like apple stem cells were a few years back.
Like embryonic stem cells, these new adult stem cells will divide again and again without appearing to age if cultured in the right conditions.
And what they found was that after a few days, these genes that they added were able to get the skin cells to start behaving just like embryonic stem cells.
His diabetes work led him to understand how to create a drug that would get directly into cancer cells, which were a lot like the stem cells he was studying in diabetes.
FORBES: Patrick Soon-Shiong and one of cancer's biggest riddles.
Indeed, the same objection also applies to stem cells that are extracted from embryos produced without nuclear transfer. (Usually these are surplus to requirements for in vitro fertilisation.) Both problems would go away if cells that behave like embryonic stem cells could be made without destroying embryos.
Issues like cloning, stem cells, and fetal research have become part of the national lexicon.
Mitt Romney is nice, says Keene, but nice doesn't really get your heart pumping, and some distrust his switch on issues like abortion and stem cell research.
Udacity offers 11 STEM courses like "Introduction to Physics, " "Intro to Computer Science, " and "Web Application Engineering" -- all free.
They would also like to push other stem-cell types, such as those found in the intestine, to the limit in their embryo experiments.
The reality is that the same moral principles that underpinned the Bush appeal on "values" issues like gay marriage, stem-cell research, and the right to life were central to his vision of U.S. war aims and foreign policy.
CENTERFORSECURITYPOLICY: W.��s ��moral values�� drive his foreign policy, too
There are some cells on the margin of adult retinas that have been identified as having stem cell-like properties, which the team says could be suitable.
The Scripps Research Institute team had already boosted the number of cells created with two compounds initiating a naturally occurring process that moves the cell nearer to a stem-cell like state.
He should also feed into the public debate on matters like euthanasia and assisted dying, stem cell research, and abortion.
Except that researchers still couldn't prove that the heart, nerve, muscle and other cells they made from the iPS cells were exactly like the ones generated from the embryonic stem cells.
The usefulness of this technology will depend on the stem cell research of companies like Geron gern (nasdaq: gern - news - people), which would allow the creation of new organ tissues from the patients' own existing cells.
FORBES: Advanced Tissue Sciences Founder Wins Inventor Award
Oh, I am not going to jump on the Apple-is-losing-its-edge bandwagon or make some obscure connection between its recent stock price fluctuations to some fatal shift in its corporate or supply chain performance (and those rumors around the reductions in orders for iPhone screens, if true, probably stem from a solid reason like a change in product strategy).
He will not like a proposal to allow more federally funded stem-cell research, but Ms Pelosi thinks she can assemble a veto-proof two-thirds majority for it.
In many states, like New York for example, the delays stem from the fact that a foreclosure must go though the court system in a judicial review.
应用推荐