Sentences with phrase «when embryonic»

YDSTIE: So does this move us any closer to the day when embryonic stem cells can actually be used for therapy?

But things can go wrong when the embryonic brain is being built, resulting in a much smaller cortex.

Two papers published this week appear to bring closer the day when embryonic - like stem cells can be used to treat human diseases.

When embryonic stem cell research came up, Johnson stated that such research has been «overhyped.»

Not exact matches

Part of the ignorance is due to the media dropping the terms «embryonic» and «adult» when reporting on stem - cell

When cloning is successful, the adult nucleus is stripped of its epigenetic programming, and is restored to a totipotent state that can use all the genetic information present in the nucleus to orchestrate the complete program of embryonic development.

In fact, when the 2007 paper came out, the commentaries in most scientific publications were quick to point out that, despite the success with adult cells, there was still a need to continue embryo - destructive research and that it would be critical to the advancement of science that research on embryonic stem cells continue.

A very significant step away from embryonic stem - cell research was taken recently when a previously forthright advocate of such research softened his stance on other ethical alternatives.

(In many ways it is worse than when John Edwards said in 2004 that if people voted for John Kerry, people like Christopher Reeve would get out of their wheelchairs and walk from embryonic stem cell therapies.)

Moreover, he insists his side is playing better football than during the embryonic phase of his tenure, when the commodities of resilience, spirit and organisation provided the foundation for the Toffees» fruitful run of results.

When this zygote goes through more cell changes and divisions and attaches itself to your uterus wall, your developing baby reaches the embryonic stage.

(CNN)- The White House meant no disrespect toward Nancy Reagan when it failed to invite the former first lady and vigorous supporter of embryonic stem cell research to a bill signing ceremony on the subject, press secretary Robert Gibbs said Tuesday.

When things get hot, embryonic bearded dragon lizards turn female — and now scientists might know why.

When these pattern - forming genes are mutated, embryonic cells have an abnormal pattern to follow.

Repeated transfection of two expression plasmids, one containing the complementary DNAs (cDNAs) of Oct3 / 4, Sox2, and Klf4 and the other containing the c - Myc cDNA, into mouse embryonic fibroblasts resulted in iPS cells without evidence of plasmid integration, which produced teratomas when transplanted into mice and contributed to adult chimeras.

«Furthermore, results of our study highlight the importance of including moisture conditions when predicting embryo growth and sex ratios and in developing proxies of embryonic development.

This happens particularly often during the stage of embryonic development, but it can also occur in tumors when they form metastases.

Future research should not only compare how embryonic stem cells, iPS cells and adult stem cells differentiate, but focus on what effects the niche in which these cells will reside, when transplanted, will have on their characteristics, including tendencies to mutate into cancer cells, notes cell and stem cell biologist Olga Genbacev at the University of California, San Francisco, (U.C.S.F.) School of Medicine.

«Then, when you begin refeeding the mice, you see these embryonic - like cells begin to give rise to beta cells.»

When Crispr - Cas9 knocks out a Hox gene in an embryonic beach hopper, strange things ensue, like a clawed foot forming where a swimming foot ought to be, or an antenna growing out of a mouth.

The prevailing theory holds that the moon was created from debris knocked loose when a Mars - size body collided with the embryonic Earth.

EMT is crucial for normal embryonic development, but also operates in wound healing, and when abnormally switched on, can enable the spread of tumor cells.

The same signals that embryonic cells use to decide whether to become nerves, skin or bone come into play again when adult animals are learning whether to become afraid.

In a similar way to how they work in other cells, epigenetic markers push PGCs to their fate during embryonic development, but PGCs are unique because when they develop into sperm and eggs, the epigenetic markers are erased.

In 2009, from experiments at the RIKEN Center for Developmental Biology in Kobe, Japan, he found that when culture conditions are right, adding a single ingredient — bone morphogenetic protein 4 (Bmp4)-- with precise timing is enough to convert embryonic cells to PGCs.

«Indeed, when we studied the mice at the embryonic stage, we saw the cells between the muscle fibers expanded explosively and formed tumors early in development,» Hatley said.

When examined under a microscope, the tumors resemble immature embryonic kidneys, leading doctors to conclude that Wilms tumors form when kidney development, normally complete by birth, persists into childhWhen examined under a microscope, the tumors resemble immature embryonic kidneys, leading doctors to conclude that Wilms tumors form when kidney development, normally complete by birth, persists into childhwhen kidney development, normally complete by birth, persists into childhood.

As it happens, moas were also the subject of Cooper's first foray into ancient DNA: He spent a year in the late 1980s working on them at the University of California at Berkeley, when paleogenetics was still an embryonic field.

It was all sequentially programmed, as if the creator booted up the cosmos at creation and let it run, or, as Robert Chambers put it when talking about embryonic development, «like Mr Babbage programming his Engine».

A group of traits common among domesticated animals may arise when a wandering group of multitasking embryonic cells lose their way, a new theory of domestication proposes.

Furthermore, they have found that neural stems cells can be culled from the patient's bone marrow, thus circumventing ethical and political obstacles to neural stem cell therapy as well as problems with immune rejection that sometimes arise when researchers must employ embryonic stem cell lines.

When Botelho applied Decamethonium bromide, a pharmacological agent capable of paralyzing embryonic musculature, the result was a non-opposable toe with a straight, non-twisted base identical to that of their dinosaur ancestors.

The bill was put forth to loosen the restrictions Bush placed on human embryonic stem cell research on August 9, 2001, when he banned federal funding for work with any stem cell line created after that date.

One of the greatest came in November 2007, when scientists in Japan and the United States reported that they could make adult skin cells from mice revert to the embryonic state.

He has been making that point since 2004, when in testimony to the U.S. Senate, he warned embryonic stem cell opponent Sam Brownback of Kansas, «Those in a position of advice or authority who participate in the banning or enforced delays of biomedical research that could lead to the saving of lives and the amelioration of suffering are directly and morally responsible for the lives made worse or lost due to the ban, or even of a moratorium that would deny such treatments in that short window of time when it could help or save them.»

In contrast to embryonic stem cells, when adult stem cells divide, their offspring are only able to develop at the same site and in certain tissue types.

«Maybe at the one - cell or two - cell stage,» Eggan and his colleagues reasoned, «there's still some of that stuff in there...» And if they picked the right moment of cell division, when these powerful reprogramming factors were still floating around in the periphery of the cell, they might be able to use drugs to temporarily freeze the cell in the middle of division, stick in the needle of a micromanipulator to suck out the embryonic DNA, squirt in DNA from an adult animal, and then kick - start the process of reprogramming — hours, perhaps even days after an egg had been fertilized.

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.

They propose that normal tissue becomes primed for cancer when oncogenes are activated and tumor suppressor genes are silenced or lost, but that cancer develops only when a cell in the tissue reverts to a more primitive, embryonic state and starts dividing.

The remarkable discovery that it is possible to turn skin cells back to an embryonic state, when they have the potential to become any type of cell in the body, could open up a huge range of possibilities.

It is at this stage, when the fertilized egg is smaller than the period at the end of this sentence, that researchers extract the inner part of the blastocyst, from which embryonic stem cells are derived.

Putting aside the euphoria, how embryonic stem cells will behave when implanted into other tissue is not yet clear at all.

In June Italian scientists announced the first human embryonic stem cells derived from parthenotes — embryo - like structures formed when an egg starts to divide on its own, with no sperm involved.

In 2004 Blackburn and ethicist William F. May made headlines when the Bush administration ousted them from the President's Council on Bioethics for their strong public support of human embryonic stem cell research.

The researchers found that the segmentation clock lies quiescent in individual embryonic cells that give rise to the vertebrae, then clicks on all at once, collectively, when the cells reach a critical mass.

The Bundestag faces a heated debate on 30 January, when the issue of whether to allow the import of human embryonic stem cells for research purposes is on the agenda.

How did you feel when you realised you had made human embryonic - like cells from skin cells?

Astrophysicists have found that when a supermassive black hole quickly devours gas and dust, it can generate enough radiation to abort all the embryonic stars in the surrounding galaxy.

When he injected mice with embryonic stem cells genetically identical to the mice's own tissues, the new cells thrived, growing into a large clump of adult tissues.

Imagine researchers» excitement, then, when Kyoto University's Shinya Yamanaka reported last year that his group had created embryolike cells directly, without transferring chromosomes, simply by injecting mouse fibroblast cells with four genes that are active in embryonic cells but not in adult ones.