Sentences with phrase «studied cell structure»

She wrote her dissertation on pollen sterility in petunias, but she also studied cell structure, which led her back to animals and a postdoc at the Scripps Research Institute in San Diego, California, where she studied a protein on the ends of actin filaments.

Cellular Studies (CEL): The study of animal cells involving the use of microscopy to study cell structure and studies investigating activity within cells such as enzyme pathways, cellular biochemistry, and synthesis pathways for DNA, RNA, and protein.

Not exact matches

Studying mice, investigators from Washington University School of Medicine in St. Louis showed that a specific energy source called NAD is important in cells responsible for maintaining the overall structure of the brain and for performing complex cognitive functions.

The shared patterns of gene expression in the limbs and phallus are generated in part by a common set of noncoding DNA, also called «elements» or «enhancers,» which act to control gene expression in both of these structures, argues a study published October 1 in Developmental Cell.

He studies DNA and RNA quadruplexes, nucleic acid structures that were first visualized via confocal microscopy in fixed, dead cells.

Sharon joined Anglister's lab for her master's project and Ph.D., studying the three - dimensional structure of a region in the HIV - 1 protein envelope that helps the virus enter human cells.

Combing the genetic data from a transmission study in ferrets, a team led by Thomas Friedrich, a professor of pathobiological sciences at the University of Wisconsin - Madison School of Veterinary Medicine, found that during transmission, when one animal is infected by another through sneezing or coughing, the process of natural selection acts strongly on hemagglutinin, the structure the virus uses to attach to and infect host cells.

Stuart Hameroff, an anesthesiologist who has spent many years studying brain functions, has collaborated with renowned Oxford University polymath Roger Penrose on a model that explains consciousness as the result of quantum processes occurring in tiny structures called microtubules in brain cells.

In this study, partial reprogramming of cells in vitro reduced DNA damage accumulation and restored nuclear structure.

He says the structure could also offer a new way of studying blood stem cells and how blood disorders arise.

In a new study published in the journal Development, the KU Leuven researchers show that individual or small groups of cells from uterus biopsies can be made to grow into three - dimensional structures that show many of the features of the womb lining, including the ability to produce mucus.

A few microscopic techniques can focus light deep into the intact brains of dead animals to study its structure without damaging the axons, but much of this light is scattered away by the fatty lipid membranes that surround individual cells, making the technique less than perfect.

While mouse models have traditionally been used in studying the genetic disorder, Deng said the animal model is inadequate because the human brain is more complicated, and much of that complexity arises from astroglia cells, the star - shaped cells that play an important role in the physical structure of the brain as well as in the transmission of nerve impulses.

Researchers studied the structure of proteins from one strain of the H7N9 virus that caused the outbreak and tested how strongly one of the proteins bound to molecules on the surfaces of bird and human cells.

Matteo Boretto, the first author on this study, commented that «we were very excited to see that we could not only robustly grow and amplify endometrial tissue in a dish, but that the tiny structures were also able to reproduce normal responses of the endometrium to hormones: oestrogen makes the tissue thicken, progesterone then induces maturation including folding (see picture), and subsequent removal of both hormones mimics the cell shedding of the menstrual period.»

In another application, the sensor was used to study how cells respond to the introduction of extracellular hydrogen peroxide, which produces a wave of oxidation as it moves through the cellular structures.

Holographic, phase contrast or differential interference contrast (DIC) miscroscopes have been implemented especially for making «visible,» otherwise «invisible,» transparent objects, opening a new pathway towards the study and characterization of relevant structures such as biological cells or protein layers.

In a previous study, Professor Schmidt - Ott and his team discovered that it regulates the differentiation of epithelial cells — they line the cavities and surfaces of structures throughout the body — in the mouse embryo.

The teams are currently working on the fabrication of 3D structures from the blend suitable for implantation in patient joints with future studies focusing on understanding the peculiar interactions between the blend and stem cells towards refining the quality of regenerated cartilage.

The brittlestar Ophiocoma wendtii, a relative of starfish, can scan the sea floor, thanks to light - sensitive cells scattered across its skin, rather than by using eye - like structures, a study suggests.

Even short - term blockages of this kind can lead to remarkable changes in the auditory system, altering the behavior and structure of nerve cells that relay information from the ear to the brain, according to a new University at Buffalo study.

Such studies used DNA from mitochrondria — structures inside cells — and placed that time of the most recent common ancestor between 99,000 and 148,000 years ago.

The researchers chose to focus on the cell - division machinery, studying the meiotic spindle, the structure composed of microtubules that attaches to chromosomes, pulling them to opposite sides of a cell before it divides.

A new study published in eLife and headed by Jordi Casanova and Sofía J. Araújo, both scientists at the Institute for Research in Biomedicine (IRB Barcelona) and the Instituto de Biología Molecular de Barcelona (IBMB - CSIC), describes a cell communication mechanism that allows the organisation of the extracellular matrix and how this structure affects cells through a feedback system.

A new study shows that these cells alter their behavior and structure when the animals» hearing is blocked.

«Investigators create complex kidney structures from human stem cells derived from adults: New technique offers model for studying disease, progress toward cell therapy.»

The method has allowed researchers to study key players involved in cell division — which include proteins that form much of the structure of chromosomes, and fragments of DNA that help to orchestrate the process.

And by creating personalized organoids from the reprogrammed cells of patients, scientists could study disease in a very individualized way — or maybe even use organoid structures to replace certain damaged tissues, such as in the liver or spinal cord.

By providing a first look at the structure of the protein complex that includes FGF23 and its co-receptors, the FGF receptor and a-Klotho, the most recent study challenges the long - accepted belief that only the cell - attached form of aKlotho can serve as a receptor for FGF23 and hence that FGF23 action is restricted to tissues having the cell - attached form.

The SOFC, referred to as a third - generation fuel cell, has been intensively studied since it has a simple structure and no problems with corrosion or loss of the electrolyte.

While researchers at the Georgia Institute of Technology don't have a specific application for the doughnut - shaped droplets yet, they believe the novel structures offer opportunities to study many interesting problems, from looking at the properties of ordered materials within these confined spaces to studying how geometry affects how cells behave.

For this study, researchers studied four solar cells with different selenium contents — and corresponding changes in crystal structure — and learned that the one with the highest level of selenium did not perform well.

«We know that other animals use polarisation patterns in the sky, and we have at least some idea how they do it: bees have specially - adapted photoreceptors in their eyes, and birds, fish, amphibians and reptiles all have cone cell structures in their eyes which may help them to detect polarisation,» says Dr Richard Holland of Queen's University Belfast, co-author of the study.

In the mouse study, the insulin - producing cells were placed under the kidney capsule — a thin membrane layer that surrounds the kidney — where they developed into an organ - like structure with its own blood supply.

The study suggests that the bacteria and archaea developed completely different cell membrane structures and proton pumps, whilst keeping the same machinery for powering growth.

For example, antibody studies showed that it is located in the Golgi apparatus and endosomes, two structures within cells in which b - amyloid is known to be cleaved from its large precursor protein.

«We now have clues to how that double - ring structure stably lingers until the cell enters the DNA - synthesis phase much later on in replication,» said study coauthor Christian Speck of Imperial College, London.

Microscopic anatomy is the study of minute anatomical structures assisted with microscopes, which includes histology (the study of the organization of tissues), and cytology (the study of cells).

One of the most intriguing reasons for studying endosymbionts like Tremblayais to learn about the evolution of mitochondria and chloroplasts, membrane - bound structures within cells that produce energy.

Nathans is a neuroscientist who studies how cells in the retina — the light - absorbing structure at the back of the eye, which is considered part of the brain — assume their correct identities, and how those cells respond to injury and disease.

This study shows how these issues have been overcome with a newly developed imaging system, making it possible to image structures as small as 80nm or less anywhere in the cell.

Scientists have developed new fluorescent probes that prove the existence of cell membrane structures called «lipid rafts», allowing researchers to study how toxins and viruses invade cells.

«Now we are going back to studying the structure of the genome because we realize that the three - dimensional architecture of DNA will tell us how cells actually use the information.

In the study, scientists coaxed stem cells into forming a fully three - dimensional tissue structure.

Researchers from the University of Michigan and the Mayo Clinic studied rat IEC - 6 intestinal epithelial cells, chosen because they maintain a stable diploid genomic structure (two sets of chromosomes), lack the cellular characteristics of cancer cells, and replicate normally.

What's more, the resolution — the highest so far in these types of studies — was good enough to discriminate structures as small as individual cells.

The main result of our study is a detailed description of the cell reaggregation process dynamics, and also of the structure of multicellular aggregates of the marine sponges belonging to the Demospongiae class,» explains Andrey Lavrov.

The case for the all - conquering Africans is based mainly on studies of the Y chromosome and the mitochondrion, an energy - generating structure within the cell that has its own small genome and passes down the female line.

«Originally, I was interested in isolating these sodium channels from cells to study their structure,» said Seok - Yong Lee, assistant professor of biochemistry in the Duke University Medical School and principal investigator of the study.

These studies show that the DNA found inside mitochondria, the cellular structures whose job is to provide cells with energy, is particularly vulnerable, most probably because they handle oxidative chemical reactions.