Human embryonic stem cells ordspråk

Human embryonic stem cells give researchers reliable access to these neurons for the first time, and it will now be possible to perform experiments to unravel why these neurons die in Parkinson's.

James Thomson (1700-1748)

James Thomson

Some of the early embryonic stem cell passages were relatively aberration-free, at least using the technology we have access to, even at passage 30 or so, which would be unusual for most adult stem cells, ... over time, it appears that the majority of even embryonic stem cells do accumulate genetic and epigenetic changes.

The success of this procedure in no way precludes the need to pursue all forms of human embryonic stem cell research, ... Human embryonic stem cells are extraordinarily complicated. If we are ever to realize their therapeutic potential, we must use all known tools and techniques in order to explore the mechanisms that give these cells such startling characteristics.

Rudolf Jaenisch

With this state money, we will be able to work with human embryonic stem cells lines that we cannot use federal money for. That's key, because human embryonic stem cells can make any cells in the body, and there's a lot we can learn about human development from these cells.

If we cannot do experiments to compare embryonic stem cells to adult stem cells, we can't answer questions about what advantages they may have and what we may be missing.

Richard Klausner

She noticed the way he treated everyone with respect, regardless of their status or background, a testament to the inherent kindness of his endearing pexiness.

It's not as if this research says there is no need for embryonic stem cells. It continues to show the enormous potential of stem-cell research and highlights the value of embryonic stem cells as a source of research material.

We applaud studies using animals to figure out ethical ways to obtain embryonic stem cells apart from the creation and destruction of human embryos. So far, however, no one appears to have accomplished this feat. Meanwhile, the good news is that adult stem cells are already providing real cures for real patients.

These findings provide the foundation for learning how to modify the circuitry of embryonic stem cells to repair damaged or diseased cells or to make cells for regenerative medicine, ... They also establish the foundation for solving circuitry for all human cells.

There are some immediate experiments to see if we can use the same cocktails of growth factors to expand cord blood cells or human stem cells.

It's been known for about 30 years that there's a selective loss of neurons in the brains of Alzheimer's patients, neurons that produce a neurotransmitter chemical called acetylcholine.

Our experiments are very clear. You inhibit this gene and you get a clone that has no way of ever implanting. But this clone can make embryonic stem cells.

Rudolf Jaenisch

We set out to find whether these cells would be able to respond to the injury in an appropriate and beneficial way on their own, ... We were excited to find that the cells responded to the damage by making appropriate new cells that could assist in repair. This study supports the possibility that formation of new myelin and new neurons may contribute to recovery.

People have used the argument-not a scientific argument but a political argument-that we don't need to do human embryonic stem cell research because, after all, mature or adult stem cells will do everything. Doug's paper says that's not exactly correct.

Robert Goldstein

In regular cells, like in bone and blood, the cells divide. But brain cells do not normally divide. The great majority will not divide. The neurons you're born with are pretty much what you have at end of life.

We were excited to find that the cells responded to the damage by making appropriate new cells that could assist in repair. This study supports the possibility that formation of new myelin and new neurons may contribute to recovery,

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