Sentences with phrase «embryonic cells»

As it does, it begins to divide to form a ball of embryonic cells.

He also said that no federal dollars could be used in research on new human embryonic cell lines.

L: We use adult stem cells, and we use the human embryonic cell lines that the government has already approved.

«At first we blamed ourselves, but then we looked at the cell markers and saw that the cells were aging much faster» than true embryonic cells.

Both egg and embryonic cells contain a great deal of water.

Are there other, intermediate embryonic cells that might, in similar fashion, give rise to the nervous system or brain?

Now researchers have found a way to create stem cells that mimic the universal role of embryonic cells.

To get more cells, researchers from Advanced Cell Technology in Worcester, Mass., grew clusters of human embryonic cells in a precise cocktail of growth factors and other cell - regulating chemicals that took several years to work out, says Robert Lanza, the firm's vice president of research and scientific development.

Other researchers have previously cloned animals, including mammals, by transferring nuclei from embryonic cells into such enucleated eggs.

The guidelines contain provisions for work with induced pluripotent cells that are similar to those in place for embryonic cell lines.

Alyssa's previous scientific endeavors focused on embryonic cell biology in model organisms and development of novel image analysis techniques.

With embryonic cells migrating as fast as several microns per second, he needed high - speed video that could capture the process.

Throughout his distinguished career (he headed the department of pathology at Harvard Medical School for two decades), Hertig suspected that there was a very early commitment by embryonic cells to become either a fetus or the placenta.

The study led by UCL researchers and published today in the Journal of Cell Biology, used embryonic cells to investigate how groups of cells move in a developmental process similar to that used by cancer to spread around the body.

But exactly how Dll4, Notch and Vegf all work in concert to transform early embryonic cells into cells that form arteries has stumped researchers.

The neural cell adhesion molecule, N - CAM, appears on early embryonic cells and is important in the formation of cell collectives and their boundaries at sites of morphogenesis.

By contrast, most embryonic and induced pluripotent stem cells are more restricted in their developmental potential, able to form embryonic cell types, but not extra-embryonic tissues.

Hwang's laboratory reported that the 11 stem cell lines were able to differentiate into the trinity of embryonic cell layers that become all cells in the body.

Perhaps the jostling of embryonic cells during common fetal ultrasounds may not be totally benign, then?

The microparticle technique, which was demonstrated in pluripotent mouse embryonic cells, also offers better control over the kinetics of cell differentiation by delivering molecules that can either promote or inhibit the process.

You must battle against destruction of unborn humans including embryonic cells like Christians do.

By exposing a magnetically responsive droplet (purple) to a magnetic field, the scientists are able to exert pressure on the surrounding embryonic cells in order to study their response to mechanical forces

But they still want to be able to do cloning, otherwise know as somatic cell nuclear transfer (SCNT), because embryonic cells are the «gold standard» for pluripotent cells — cells that can become any cell type in the body.

For one thing, if a skin cell can be turned into a far more versatile embryonic cell, then maybe there's a way to turn any specialised cell directly into another.

To investigate in more detail, researchers from KU Leuven and elsewhere employed in vitro fertilization in cattle as a flexible system to study chromosomal changes in single embryonic cells.

Salk scientists and colleagues have proposed new molecular criteria for judging just how close any line of laboratory - generated stem cells comes to mimicking embryonic cells seen in the very earliest stages of human development, known as naïve stem cells.

Lead author found guilty of misconduct in embryonic cell lineage paper called into question over a year ago

Other groups had discovered hemangioblasts in mouse and human embryonic cells as well as in adult human bone marrow and umbilical cord blood.

«If we can grow embryonic cells and keep them alive, this technology could be important in battling those coral diseases.»

Schöler and his team looked at embryonic mouse clones that were just a few days old to see when and where the Oct4 gene — which helps embryonic cells decide where to go and what to do — is active.

A year earlier, the team had produced twin sheep, named Megan and Morag, by cloning cultured embryonic cells in an effort spearheaded by Roslin developmental biologist Keith Campbell.

In January, Hagedorn and her collaborators will focus on culturing frozen embryonic cells to see how long they can live.

However, in 2007 Professor Wilmut announced that he had decided to change to an alternative method of research pioneered in Japan, known as direct reprogramming or «de-differentiation», which could create human embryonic cells without using human eggs or cloning human embryos.

In SIF - seq, hundreds or thousands of DNA fragments to be tested for enhancer activity are coupled to a reporter gene and targeted into a single, reproducible site in embryonic cell genomes.

In these instances, the committee says, the use of existing embryonic cell lines derived from embryos fewer than 14 days old should be considered before resorting to the use of cells taken from surplus in vitro fertilization embryos fewer than 14 days old.

Groups of red and green labelled embryonic cells in a zebrafish during their first migration in gastrulation.

Heller's team produced the inner - ear hair cells by exposing embryonic cells in the lab to chemical factors which steer the natural development of hair cells.

Like a Texan who keeps his drawl after moving to California, adult cells reprogrammed to resemble embryonic cells retain some signatures of the tissue from which they came.

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.

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.

Each of these cells, called naive, pre-implantation embryonic cells, has the capacity to develop into any cell type in the human body, an ability called pluripotency.

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 proteins in them are characteristic of fetal and embryonic cells rather than of mature erythrocytes, and the authors take care to call them «erythroid cells» rather than true erythrocytes.

Similarly, the three research teams that last week reported turning mouse skin cells into embryolike cells say they will have to study embryonic cells to learn how to reprogram human cells in the same way and to understand their potential.

A few years ago, it was discovered that there are two stages for human pluripotent stem cells, corresponding to the pre-implanted and post-implanted embryonic cells.

They then studied the state of X chromosomes in naïve cells of female embryos», which each contain two active X chromosomes, unlike more mature embryonic cells that have silenced one X.

When current methods for generating naïve stem cells in the lab were judged using the three tests, each fell short of mimicking the naïve embryonic cells in different ways.