Sentences with phrase «larger nucleus»

Cancer cells contain a higher ratio of DNA to protein and a larger nucleus, making it possible to judge whether cancer is present.

One advantage, Fulle says, is that the new comet will probably have a larger nucleus than Wirtanen, which would make it easier to carry out the challenging landing.

Liver cells lacking TRF1 gene (right) show, under chronic stress, larger nuclei and other markers characteristic of patients with cirrhosis or hepatitis (an increase in p21, PCNA and cyclin D1), when compared to normal cells under the same stimulus (left).

«A crucial test to see whether this is the case would be to engineer the formation of one, two, or three droplets via collisions of protons, deuterons, or helium - 3 projectiles with larger nuclei,» said University of Colorado physicist Jamie Nagle, a co-spokesperson for the PHENIX collaboration at RHIC.

The basic idea is that, in the case of large nuclei such as gold, which have a very large positive electric charge, electromagnetic interactions play a much more important role in particle production than they do in the case when two small, equally charged protons collide.

These particles give the most direct insight into the conditions created within the collision zone, including the orbital motion of quarks (in proton - proton collisions) and the role of gluon fields (in collisions of protons with larger nuclei).

But the theory they developed, published in 2011, gave scientists no reason to expect such a strong directional preference when protons were colliding with larger nuclei, let alone a complete flip in the direction of that preference.

Higher grade tumors correlate with higher restricted water volume in the cancer cells» large nuclei.

A soft embryonic stem cell (left) has a large nucleus (blue) and relatively little actin (red) and responds to applied stress by spreading and downregulating gene expressio

The iPSC colonies were morphologically indistinguishable from hESCs, forming tight colonies of cells with a large nucleus to cytoplasm ratio and prominent nucleoli (Fig. 2E), and they did not display the NSCs» original cell morphology (Fig. 2F).

Not exact matches

Cells with nuclei, called eukaryotic cells (which make up virtually all multi-cellular organisms) are much larger and more complex that prokaryotic cells and likely resulted from the early combining of prokaryotic cells.

We anticipate some sort of growth toward increased complexity: increasingly larger organic macromolecules, then the convergence of many macromolecules to constitute a simple living system, either as a cell with its protective wall and vital nucleus or as some functional analogue, then the convergence of many cells to form larger organisms.

Non-alcoholic fatty liver disease (NAFLD) is defined medically as macrovesicular steatosis, or abnormal retention of lipids (fats) sufficient and large enough to distort or replace the nuclei of liver cells among those who consume less than 20 grams -LRB-.7 ounces) of alcohol per day.

SPHERE • • of the star collapsed into a singularity • • • • of the planets - and the atomic nucleus • • • • of The Planets by Gustav Holst, and the Harmony of the spheres • • • • of the very large and the very, very small coming together without beginning or end • •

LeVay achieved fame in the 1990s for publishing a study, often called «the gay brain» report, which revealed that the third Interstitial Nucleus of the Anterior Hypothalamus in heterosexual men was twice as large as the one found in gay men's brains.

In this review published in EPJ A, Terry Fortune from the University of Pennsylvania, in Philadelphia, USA, discusses the structure of unstable and unbound forms of Helium, Lithium, and Beryllium nuclei that have unusually large neutron to proton ratios — dubbed «exotic» light nuclei.

By smashing together nuclei of lead — the largest particles the LHC can handle (pdf)-- the ALICE experiment will create a quantum - scale fireball 100,000 times the temperature of the core of the sun.

Rather the nucleus may have evolved from a persisting large DNA virus that made a permanent home within prokaryotes.

The analysis revealed that the human genome is organized into large pieces of low or high epigenetic stochasticity, and that these regions correspond to areas of chromosomes that are structurally different in the cell nucleus.

In extreme cases, a single atomic nucleus can possess as much energy as a large hail stone falling on your head.

The actin cytoskeleton of both cells is exposed; the white blood cell nucleus is shown in brown and the large actin - rich extension that dismantles the endothelial actin is shown in yellow.

Though their nuclei are still separated by a large distance, the shapes of the galaxies in Arp 256 are impressively distorted.

Although the ions are originally involved in the development of almost one third of all newly formed particles, the concentration of the large cloud condensation nuclei in the course of the 11 - year cycle changes by only 0.1 percent — not enough to have any sizeable influence on the climate.

Prof. Alon explains that the nucleus is the largest, most rigid structure in the cell.

Iron and nickel nuclei have the largest binding energies per nucleon of all nuclei and therefore are the most stable.

In the computer simulations, the research team investigated what happened after two large comet nuclei violently collided together.

In its normal state, a cell's DNA is distributed in the cell nucleus over a relatively large area.

The larger organelles, such as the nucleus and vacuoles, are easily visible with moderate magnification (although sometimes a clear view requires the application of chemicals that selectively stain parts of the cells); they were among the first biological discoveries made after the invention of the microscope.

To tally the proteins, the largest ever reported for a single organelle, cell biologists Angus Lamond of Scotland's University of Dundee, Matthias Mann of the University of Southern Denmark in Odense, and their colleagues first separated the nucleolus from its gelatinous home in the nucleus.

These phenomena are related to the fact that ions approach the crystal nuclei within a certain range of distances and are scattered through an angle large enough for them to interact with several adjacent atoms before exiting the thin crystal with a distinctive angular distribution.

Over millions of years, a large star fuses nuclei into increasingly heavy elements.

Gigantic black holes are at home in the nuclei of large galaxies all around us.

Dujic theorizes that nitric oxide in the body, produced during exercise, destroys most of the tiny «bubble nuclei» around which larger bubbles form.

These energetic particles have to enter into what we call the heliosphere, which is the large volume of space that is dominated by our sun, through the solar wind, which is a plasma of electrons, atomic nuclei, and associated magnetic fields that are streaming nonstop from the sun.

In the process a helium nucleus is produced, accompanied by release of a neutron and large quantities of usable energy.

To interact effectively on all these levels, neurons, nuclei, cortical columns, and larger areas need to be connected.

Ionizing radiation can do scary things to a cell's nucleus, shuffling or deleting large chunks of DNA in ways that can turn cells cancerous.

Fusion aims to generate power by melding light nuclei together to make larger ones, a process during which some of the nuclear mass is converted into energy.

Mainstream fusion power schemes fuse hydrogen isotopes called deuterium and tritium to make helium nuclei, releasing large amounts of energy in the process.

The virus ends up in a larger organelle called a caveosome, where it is repackaged for the final journey to the cell's mission control center: the nucleus.

However, given the size of their nucleus, much larger than yeast's, it is the nucleoporins that move towards the activated genes and not vice versa,» explains Françoise Stutz.

The eukaryotic cell nucleus and large, complex DNA viruses like Mimi share a compelling number of biological traits.

«If you ask a nucleus, they would tell you the cytoplasm is like honey, because they are really large and slow, and they don't feel cytoskeletal structures — they only feel the viscous disassembled protein solution, and have very small resistance,» Guo says.

Chloroplast DNA is separate from the genome DNA in the plant nucleus, and the large numbers of these tiny organelles in the cell allow huge volumes of the coagulation protein to accumulate in each tobacco leaf.

But in MJD patients, it collects in large clumps, clogging cell nuclei in the affected brain areas.

The number of particles spawned by a collision of two atomic nuclei of gold is larger than what one would get by smashing together the individual particles that make up those nuclei.

The ALICE experiment at the Large Hadron Collider (LHC) at CERN (1) has made a precise measurement of the difference between ratios of the mass and electric charge of light nuclei and antinuclei.

The aim of ITER is to show that, in theory, nuclei of deuterium and tritium (isotopes of hydrogen) can be fused in a searingly hot plasma at the heart of the reactor, thereby releasing large quantities of heat that could be used to generate power.

Residing in large numbers outside the nucleus of every cell, mitochondria contain their own DNA, with unique features that «may require a reassessment of some of our core assumptions about human genetics and evolutionary theory,» concludes Wallace, director of the Center for Mitochondrial and Epigenomic Medicine at The Children's Hospital of Philadelphia.

20 We are family: Scientists suspect that a large DNA - based virus took up residence inside a bacterial cell more than a billion years ago to create the first cell nucleus.