Sentences with phrase «d population of cells»

Sheer mass is a major issue — it's very difficult to nourish a 3 - D population of cells in the lab on the scale of a liver.

Not exact matches

(i) a woman's right to choose; (ii) teaching evolution in school; (iii) medical immunization of teen girls against HPV; (iv) assisted suicide; (v) gay marriage; (vi) my right to view art and theatre deemed «offensive,» «blasphemous» or «obscene» by theists (vii) basic $ ex education for older school children; (viii) treating drug abuse as principally a medical issue; (xi) population control; (x) buying alcohol on a Sunday; (xi) use of condoms and other contraceptives (xii) stem cell research.

In the clearest possible case, the ANT - OAR cell would differ from a zygote on all of the parameters noted above: The ANT - OAR cell would have a pattern of gene expression that is clearly distinct from a zygote; it would generate a homogeneous population of cells rather than multiple cell types; it would undergo simple cleavage divisions and not produce any multicellular structures.

I know it's popular to think of movies where Floyd is sharing his cell with a hardened criminal and having to worry about being shanked, but it's much more likely that he spends a bunch of time away from general population, being kept safe and probably watching TV and reading his days away.

Tunisia's 10 million residents and two million expatriate citizens are avid users of technology, however: 85 % of the population has cell phones (5 % smart phones), and roughly two million of them are on Facebook.

They're not the only ones, of course, since political organizers from Manila to D.C. have found that cell phones are profoundly political devices, particularly when they reach populations that are otherwise effectively off the grid.

Since the population of cells down there is small, most people thought they would just barely be able to eke out a living, that they were organisms with very few capabilities.

Instead, the team used functional magnetic resonance imaging (fMRI) to detect populations of cells that seemed to fire as the volunteers played a virtual reality game in which they had to replace an object in the location where they originally found it.

They discovered a population of NKT cells that have a gene that controls so - called regulatory T - cells, whose role is to suppress the immune response.

In the course of examining single unit responses from the cortex of unrestrained and unanesthetized cats, we have come upon a population of cells that appears to be sensitive to auditory stimuli only if the cat «pays attention» to the sound source.

He specifically wants to expand the population of stem cells that will induce regeneration of neurons and blood vessels in patients who have suffered a hemorrhagic stroke, the kind of stroke which is caused by blood clot.

Neuroscientists at Cold Spring Harbor Laboratory (CSHL) have mobilized advanced imaging and computational methods to comprehensively map — «count» — the total populations of specific types of cells throughout the mouse brain.

Previous studies have examined cancer stem cells (CSCs)-- small populations of cells within a tumor that are resistant to chemotherapy.

Subsequent tests revealed that the treatment had reduced the visible cell population by a factor of 100 thousand, compared with an untreated cell culture, within the space of just 20 days.

They demonstrated that non-obese diabetic (NOD) mice treated with a specific (AID / RAD51) pathway inhibitor had larger populations of certain B cells that were capable of suppressing diabetogenic T cell responses, and greatly reduced T1D development, compared with untreated controls.

In June 2012, physicist Jeff Gore of the Massachusetts Institute of Technology in Cambridge and colleagues reported that they had induced critical slowing down in laboratory populations of these single - celled fungi.

In this study, the researchers found that a specific population of immune cells called macrophages have the ability to secrete or produce a protective or healing factor known as Interleukin - 10 (IL - 10), which can interact with receptors on intestinal epithelial cells to promote wound healing.

One plausible explanation was that over the course of successive population crashes, the devils had become so inbred that their cells look identical — at least to the animals» immune systems.

Most theorists assume that such a complex concept would have to be supported by large populations of cells, each of which corresponds to one component of the object (the bun, the bifocals, the leather miniskirt).

Although the new JNCI study did not analyze individual cell phone usage — preferring instead to take a broader look at the population at large — other research has examined subgroups of cell phone users to try to discern different trends among more frequent use.

Within a single tumor exists such an astonishingly varied population of cells, each with its own combination of normal and abnormal genes, that at least some cells nearly always have a way to survive any particular attack.

Now, a team of scientists at the Icahn School of Medicine at Mount Sinai have developed the Just EGFP Death - Inducing T - cell, or JEDI T - cells, which enable the visualization of T - cell antigens, allowing researchers to study T - cell interactions with different cell types, model disease states, and finally determine the functions of otherwise poorly characterized cell populations.

Although some teams have managed to produce nearly pure colonies of certain kinds of neural cells from ES cells, no one has managed to concoct a recipe that will direct the cells to become, say, a pure population of dopamine - producing neurons that could replace those missing in Parkinson's disease.

The limitation of ChIP - seq is that it can not deliver a conclusive picture of transcription factor binding in a single cell because it samples events in a population after the cells have been exposed to various toxic chemicals.

We will have the opportunity to understand the molecular basis of these diseases and to identify drugs that may be able to prevent symptoms, or to identify stem cell populations that can be implanted to replace damaged or dead cells.

«Young students of cognitive neuroscience are lucky to be in the midst of a new era where we have access to amazing new tools of science for eavesdropping on the population of cells with a superb temporal resolution,» Parvizi says.

The research team found that the experimental group had an imbalance of cell populations in breast tissue: too many luminal and too few basal.

Saatchi, which is owned by France's Publicis Groupe, SA, chose LifeStraw over a field of competitors that included a reusable controller to improve the distribution of IV fluids, a collapsible wheel that can be folded down for easier storage when not in use on bicycles or wheelchairs, an energy - efficient laptop designed for children in developing countries, a 3 - D display that uses special optics and software to project a hologramlike image of patient anatomy for cancer treatment, an inkjet printing system for fabricating tissue scaffolds on which cells can be grown, a visual prosthesis for bypassing a diseased or damaged eye and sending signals directly to the brain, books with embedded sound tracks to help educate illiterate adults on health issues, a phone that provides telecommunications coverage to poor rural populations in developing countries, and a brain - computer interface designed to help paralyzed people communicate via neural signals.

Participants with high - risk bacterial communities, which are commonly found in the population of women studied, also had increased numbers of genital CD4 + T cells — white blood cells that are HIV's primary target.

Now, Dr. Ito and team have discovered an important clue in this process: a population of self - renewing stem cells in the nail matrix, a part of the nail bed rich in nerve endings and blood vessels that stimulate nail growth.

For Helicobacter pylori, a pathogenic bacterium that colonizes over 40 percent of the world population and is associated with gastric cancer, the team discovered that epigenetic heterogeneity can quickly emerge as a single cell divides, and different subpopulations with distinct methylation patterns have distinct gene expressions patterns.

Using only the DNA from sloughed - off cells floating in the ocean, scientists have been able to determine the population size and genetic properties of one of the world's largest and most mysterious animals: the whale shark.

New techniques have made it possible to study the arrangement and interconnections of entire populations of cells

Scientists have found some serious loot in that bemoaned organ, including a vigorous population of flexible stem cells that can be coaxed into acting as new cartilage or tendons for damaged joints.

«The recent discovery of tumor - promoting milieus, referred to as metastatic niches, that are established at distant sites prior to or upon the arrival of disseminated tumor cells could explain cancer cells that relapse early, but in late relapsing populations, what tumor cells do from the time of dissemination to the time they become clinically detectable has been a big question.»

A couple of other research groups have also sorted stem cells based on gene expression, but they have not done so specifically with the goal of enriching cell populations for a specific tissue, the researchers said.

The research team of Professor Michiels showed that the number of tolerant cells in a population increases as bacteria are exposed to antibiotics more often: daily doses have a bigger impact than weekly doses.

National Institutes of Health researchers studying zebrafish have determined that a population of cells that protect the brain against diseases and harmful substances are not immune cells, as had previously been thought, but instead likely arise from the lining of the circulatory system.

In the cases, just this last couple of elections, where stem cell politics, for example, has been played out in the electoral process, stem cell research is [has] done better than the winning candidates for offices; and I think, apart from that, I think that we do have a serious problem in general education of the sciences and that accounts for the reluctance of a large segment of the population to accept the principles of evolution and think that there is still a debate about it, which there isn't — and that's a problem we need to solve, — but I still think there is an incredible constituency for science in this country.

Techniques enabling the isolation of specific cell populations have advanced our ability to identify and characterize niche cell types which may be used to replace or engineer cells / tissue.

Now a team of engineers at MIT has developed a new way to deliver such vaccines directly to the lymph nodes, where huge populations of immune cells reside: These vaccines hitch a ride to the lymph nodes by latching on to the protein albumin, found in the bloodstream.

However, they had to carefully time the shutdown so that the cell population would be large enough to produce a substantial amount of glucaric acid.

The code that a monkey's brain uses to represent faces relies not on groups of nerve cells tuned to specific faces — as has been previously proposed — but on a population of about 200 cells that code for different sets of facial characteristics.

«Secondary benefits of this trial include the significant improvement in clinical care for children with sickle cell disease at each of the 29 sites because each location had a designated hematologist, neurologist, neuroradiologist and psychologist working as a team to identify and decrease further injury to the brain in this vulnerable population.»

Dr Saraswat explained that the impact of endometriosis — a relatively common condition in which cells from the lining of the uterus (endometrium) are found elsewhere in the pelvic area — is relatively unknown in pregnancy in general populations of women, with most studies performed in infertile women having assisted reproduction.

To identify this T cell population, the researchers took biopsies at the sites of active lesions before treatment and biopsies of the same skin areas after the lesions had cleared on therapy.

Conservation work to defeat the disease has including removing infected individuals from the population and new research in Evolutionary Applications explains how this gives us a unique opportunity to understand how human selection alters the evolution of cancerous cells.

DFTD is an asexually reproducing clonal cell line, which during the last 16 years has been exposed to negative effects as infected devils, approximately 33 % of the population, have been removed from one site, the Forestier Peninsula, in Tasmania between 2006 and 2010.

In a statement put on the Web this morning, NIH reported that all 64 lines «show characteristics of stem cell morphology» and have undergone several population doublings, and most of them have demonstrated all the protein markers «known to be associated with human embryonic stem cells.»

She said that a failure to maintain NFkB signals at this point, or even after memory T cells have been produced, leads to a loss of the population of memory T cells that have been generated after the infection.