Sentences with phrase «on cell shape»

The field's clinical cousins — pathology and hematology — also rely heavily on cell shape.

Not exact matches

Wesley's emphasis on the small group — most famously, his disciplined, close - knit «CLASS meetings» — has shaped the landscape of modern American spirituality through «cell groups,» Bible studies, and many other small - group modes of fellowship and worship.

In 1999, Anthony Atala grew a colony of bladder cells, taken from a biopsy and seeded on a «scaffold» in the shape of a patient's own bladder.

Or me and this boy's mama will come after you with a sharp bento pick shaped like a panda and feed you uncut grapes while you talk on your cell phone.

While you are making adjustments for your changing shape, there are a lot of changes going on inside your womb as your baby, who was just a cluster of cells a couple of months ago, has organs, nerves, muscles and is looking more like a little person.

That development is important because a T cell response will likely confer longer - term protection than current inoculations do and defend against a variety of flu strains (because T cells would be on the lookout for several different features of the flu virus whereas antibodies would be primarily focused on the shape of a specific strain).

Biologist Ann Cornell - Bell of Viatech Imaging in Ivoryton, Connecticut, put on display star - shaped cells, called astrocytes, from the rat hippocampus, a brain region associated with long - term memory.

For instance, to make a rod with collagen fibers aligned along its length (like a tendon) they cultured chondrocyte cells in a dog bone - shaped mold with loops on either end.

So far the blocks have been used to build a variety of living 3D shapes that have never before been created on a cell - by - cell basis, such as tubes and solid spheres.

«Once we have proof that we can grow cells in specific three - dimensional shapes on or inside silicon, then we hope to come back to the tissue.»

The absorbance and scattering of light is determined by the size, shape and material of the nanomaterial and, more importantly, it is also affected by any medium in close proximity to the nanomushroom, such as cells that have been placed on the slide.

Even abstract object shapes could be differentiated based on the observed cell activity.»

Schematic illustration of cells (blue mountain - like shapes) on top of nanoscale mushroom - like structures with silicone dioxide stems and gold caps, which have the potential to detect cell proliferation in real - time.

In people with sickle cell anemia, molecules of sickle hemoglobin clump together and form long rods that cause red blood cells to become rigid and take on a sickle shape.

The mushroom - shaped protein specializes in infecting cells, first by binding a trio of sites on its head to three separate sugar molecules on the surface of targeted cells.

The process, reported in Human Reproduction, utilizes DNA fingerprinting (an assessment of active genes in a given cell) to boost the success rate of IVF and lower the chances of risky multiple births by identifying which of several five - day - old embryos are most likely to result in pregnancy The new method, which will replace unproved alternatives such as choosing embryos based on their shape, is likely to up the success of women becoming pregnant and lower their chances of having multiple births.

Lee is an expert on the viral envelope, the dynamic outside surface of a virus that latches onto a cell, then changes its shape to let the virus enter and infect the cell.

To determine if Sup35 could change shape on its own or if it needed help from other molecules in the cell, the team studied the purified protein in the test tube.

I was struck by the similarities between the pasta shapes shown in Richard Webb's article on their mathematical interpretation (15 October, p 48) and some shells of foraminifera, a type of single - celled marine planktonic animal.

There it passes on the fragments to other immune cells, which produce a distinctive fork - shaped antibody, known as immunoglobulin E, or IgE.

Because burgeoning teeth depend on information from the budding embryonic jaw, work toward generating replacement teeth from dental stem cells focuses on growing them in the desired location in the recipient's mouth — but scientists are not yet sure the adult jaw can provide the necessary signals to shape made - to - order teeth.

Depending on which device they buy, researchers can photograph cells at anywhere from 20x to 60x magnification, and use the included software to sort them by purely visual characteristics such as shape and size, fluorescent markers, or both.

Those analyses have long relied on qualitative changes in cell shape to track physiological shifts.

Because of a quirk of evolution, these plant chemicals are close enough to the natural hormone's shape to bind to the oestrogen receptors on cells in the human body.

Since the development of the earliest clinical hematology analyzers, automated cell counting based on cellular shapes has been a staple technique of medical and basic research laboratories.

In fact, tests undertaken on red blood cells showed that the star - shaped polymer dosage rate would need to be increased by a factor of greater than 100 to become toxic.

To do this without a brain or nervous system, says Ken Showalter, a chemist at West Virginia University, the organism relies on proteins and nutrients that «swish back and forth» through the cell to communicate the location of the food and allow the organism to change shape.

They chose this region because it has a large number of cells and because the bird's feet hadn't been treated with arsenic, leaving the DNA there in better shape than on the rest of the preserved carcass.

The scientists zoomed in on the ellipsoid body, a donut - shaped structure in the middle of the fly's brain where they suspected the insect equivalent of head direction cells might reside.

MERS CoV (CoV stands for coronavirus) has on its surface an array of spike - shaped proteins that bind to host cells — specifically to receptor proteins called DPP4 on the surface of cells that line human airways.

Other organs have been constructed from cultured cells, but they were built on a scaffolding to give them their three - dimensional shape.

Most common among people of African descent, the disorder causes oxygen - carrying red blood cells, which are normally flexible and round, to become rigid and take on a crescent (or sickle) shape.

To demonstrate the technique, the team printed a pattern of hydrogel with cells in the shape of a tree on an elastomer layer.

This provides a wealth of information on the patterns of cell shape, motion and division.

To get a better grasp on the problem, bioengineer Christopher Chen and colleagues at the Johns Hopkins University School of Medicine in Baltimore played with the shape of growing stem cells.

It is Neuroscience 101 that neurons pass on electrochemical messages at communication sites called synapses, but it is less well appreciated that the vast majority of synapses are «tripartite,» consisting not just of a neuron sending a message and one receiving it, but also, nestled alongside each synapse, a star - shaped glial cell called an astrocyte.

As genetic circuitry shapes up, scientists hope the new device will make it easier for them to program cells to do things such as watch for disease, monitor pollution, or even turn on medicine output.

«We saw that chem7 had hardly any effect on the shapes of the cells and tissues, thus, suggesting that chem7 stops cell division in plant cells, but does not cause any severe damage to the shapes,» describes Ueda.

In the new study, the researchers cultured mouse skin - cancer colonies on various 2 - D and 3 - D environments of different shapes and patterns to see if the tumor shape contributes to activation of cancer stem cells, and to see where in the tumor the stem cells appeared.

Atala's method involved painting several coats of Kaitlyne's muscle cells on the outer surface of a bladder - shaped mold made of collagen.

The team focused on one efflux pump protein, known as AcrA, which connects two other proteins in a tunnel shape through the bacterial cell envelope.

Here's the clue: Cells in the center of the trophosome harbor small microbes with a classic rod shape, but those on the periphery house much plumper microbes.

Cells put a lot of effort into preventing proteins — which are like a string of beads arranged in a precise three - dimensional shape — from unraveling, since a protein's activity as an enzyme or structural component depends on being properly shaped and folded.

The models showed that the rigid, crescent - shaped red blood cells that are the hallmark of sickle cell disease don't cause these blockages on their own.

On the surface of our numerous star - shaped brain cells called astrocytes, they have found the molecule LRP4 is important in ensuring healthy levels of a brain chemical that enables learning and memory, said Dr. Lin Mei, chairman of the Department of Neuroscience and Regenerative Medicine at the Medical College of Georgia at Augusta University and Georgia Research Alliance Eminent Scholar in Neuroscience.

The team used patterned photoactivation non-linear SIM to produce videos showing structural proteins break down and reassemble themselves as cells move and change shape, as well as the dynamics of tiny pits on cell surfaces called caveolae.

«I'm interested in understanding how single cells maintain their proper shape,» said Athena Lin, graduate student at the University of California, San Francisco, and lead researcher on the project.

«The cells began to take on the shape of liver cells, and even started to perform regular liver - cell functions,» said UCSF Postdoctoral Scholar Milad Rezvani, MD, the paper's other lead author.

The research builds on the team's previous work with a technique called three - dimensional culture, which involves incubating stem cells in a floating ball - shaped aggregate, unlike traditional cell culture in which cells grow in a flat layer on the surface of a culture dish.

(Bottom) Plotting the characteristic ellipsoids for each cell by how round they are in the two major cross sections reveals that cells tend to different shapes on different scaffolds — spheres at one extreme, long narrow rods at another.