Sentences with phrase «cells form during»

Not exact matches

Experiments in animal cells have shown that although these genes are required to form pluripotent stem cells during development, they are not powerful enough on their own to overcome the epigenetic programming of a mature cell and convert it to a pluripotent stem cell directly.

During working out, muscle cells rely heavily on glycogen, the storage form of carbohydrates in your muscles and liver.

But researchers at UC Irvine recently revealed how DHA deficiency during pregnancy limits baby brain development — without enough DHA, brain cells aren't able to grow and form connections.

Children's brain nerve cells form before birth and continue to develop during the first six years.

During pregnancy, many women suffering from HELLP syndrome require a transfusion of some form of blood product (red cells, platelets, plasma).

Camp Nurse The camp nurse is accessible to staff during camp hours by cell phone and reviews all emergency forms, medical forms and accident reports, assists in medical distribution, checks first aid supplies and assists in other areas.

«When a new substance forms during a chemical reaction, many students think that the atoms and molecules have actually changed into something new, whereas they simply rearranged, that the mass increase of plants is due to minerals in the soil, or that cell division alone accounts for animal growth,» said Cari Herrmann Abell, a senior research associate at Project 2061.

They made these clones by a process called automatic parthenogenesis: The egg is formed normally (with half the species» usual number of chromosomes), then fertilized by the «polar body,» a cell that is created during oogenesis and contains the same gene copies as the egg, resulting in the shark having half the genetic variation of its mother.

15 For organs to form during embryonic development, some cells must commit suicide.

The enzyme at the center of this study, ADAR1, is normally expressed during fetal development to help blood cells form.

Thawing caused ice crystals to form and prevented meiosis, the cellular process during which an egg's chromosomes split up from 46 to 23, to be united later with 23 chromosomes from a sperm cell.

The tumour cells pass between individuals during biting behaviour and tumours form predominantly around the face and neck, grow rapidly and cause close to 100 per cent mortality.

This genetic recombination takes place during a specialized form of cell division called meiosis.

Working with an animal model, the researchers found that a type of cell present in the brain's primary processing area during early development, long thought to form structural scaffolding with no role in transmitting sensory information, may conduct such signals after all.

But previously it has proved impossible to preserve whole organs, because ice crystals form in the cells during freezing, literally tearing them apart.

«Active HSCs (hematopoietic stem cells) form the daily supply line that continually replenishes worn - out blood and immune cells while the reserve pool serves as a backup system that replaces damaged active HSCs and steps in during times of increased need,» explains Li.

During development, as an embryo forms differentiated tissues, liver cells, brain cells, muscle cells, the cells in those tissues begin to allow for the selective expression of genes contained in those same 3 billion nucleotides.

The research, published in the journal Scientific Reports, shows for the first time that the way in which fat is made within the body is not «pre-programmed» during the early years of development as previously thought but even in adulthood cells can be influenced by our environment to change the type of fat that is formed.

Some evidence suggested brain cells form new connections during sleep; other evidence suggested sleep pares away existing connections.

NRXN1 and CNTN6 are important during brain development and produce molecules that help brain cells form connections with one another.

In contrast to necrosis, which is a form of cell death that results from acute tissue injury and provokes an inflammatory response, PCD is carried out in a regulated process that generally confers advantages during an organism's life cycle.

These are other proteins that are periodically formed and again broken down during the various phases of the cell cycle.

For proteins in the cytosol, the liquid inside the cell, these random molecular processes include differences in the break - down of proteins, or random partitioning into the two cells that form during cell division.

By repeating the experiment over and over, however, they are assembling a picture of what types of cells exist, how those cells function during tasks of place memory, and what kinds of connections they form with other cells.

«For several years, we have been studying myogenesis, a process by which muscles are formed during embryonic development,» says Jean - François Côté, PhD, Director of the Cytoskeletal Organization and Cell Migration research unit at the IRCM.

This discovery by the scientists at the CRG provides an insight into stem cell - forming molecular mechanisms, and is therefore of great interest for studies on the early stages of life, during embryonic development.

Ice crystals that form during cooling and rewarming can break, puncturing cells and bursting blood vessels.

«During the last step of this process, muscle cells called myoblasts align and fuse together to form muscle fibers.»

During pregnancy, epithelial cells in the breasts proliferate and form structures that make milk.

«What we show is that the Zika virus infects neuronal cells in dish that are counterparts to those that form the cortex during human brain development.»

During pregnancy, hormonal signals cause epithelial cells lining the ducts to proliferate and form ball - like structures called alveoli, which is where milk is made when the baby is born.

Through studies conducted in mice, Oliver M. Steinmetz, MD (University Hospital Hamburg Eppendorf, in Germany) and his colleagues have shown that the messenger protein IL - 6, which is rapidly produced at high levels during an acute inflammatory form of kidney disease, potently dampens activation of tissue - destructive immune cells called macrophages.

During embryonic development, organ - specific cell types are formed from pluripotent stem cells, which can differentiate into all cell types of the human body.

In nickel - cadmium (NiCad) batteries, for example, the Cd (OH) 2 and Ni (OH) 2 that are formed during cell discharge are readily converted back to the original electrode materials (Cd and NiOOH), when the cell is recharged.

«We know from animal models that there are critical periods during early development when cells are rapidly dividing and forming the circuitry through which cells will communicate with each other to form various tissues of the body,» said Retha Newbold, a reproductive biologist at the National Institute of Environmental Health Sciences in North Carolina.

In meiosis, a precursor cell — primordial germ cell — produces four spermatozoids during spermatogenesis, while only one oocyte is formed during oogenesis (the other three cells die during the process).

The «small, but perfectly formed» flies will help scientists sort out the mechanisms governing cell size and number during development, says molecular biologist Sally Leevers of the Ludwig Institute for Cancer Research in London.

The fragment forms a «micronucleus» with its own membrane and becomes prone to extensive rearrangements of its genetic material, which can then be reincorporated into chromosomes during the next cell division.

The virus seemed to trigger and enter through a balloonlike structure, or bleb, on the cell surface, which normally only forms during cell movement, division, or death.

The team used ChromEMT to image and measure chromatin in resting human cells and during cell division (mitosis) when DNA is compacted into its most dense form — the 23 pairs of mitotic chromosomes that are the iconic image of the human genome.

During early embryonic development, cells throughout the forming retina are proliferative.

These cells, often referred to as bone marrow stroma cells, develop during bone formation, from the early osteoprogenitor cells which later invade along the forming blood vessel and enter the bone marrow.

Enzymatic crosslinking is the way in which our blood clots during wound healing — cells secrete an enzyme, transglutaminase, which crosslinks fibrin, forming an insoluble protein polymer, or clot.

During the process, the cells begin to form three distinct layers: the endoderm, mesoderm and ectoderm, determining which tissues or organs the cells will then develop into.

How do individual cells form tissues during development?

Even though transient and weak it is becoming more and more obvious that lipid protein interactions are the key for many regulatory processes in which specific protein complexes have to be formed for example upon stimuli during cell signaling.

As cellular junctions are one of the first specialized structures that form during tissue development they have a critical role in guiding cell polarization and differentiation.

Morphogenesis is the remarkable process by which cells self - assemble into complex tissues and organs that exhibit specialized form and function during embryological development.

Chromatin is compacted to form chromosomes, which pass along an organism's genetic fingerprint to newly formed cells during cell division.

«The damage from a heart attack is typically permanent because heart - muscle cells — deprived of oxygen during the attack — die and scar tissue forms,» said Dr. Srivastava, who directs cardiovascular and stem cell research at Gladstone, an independent and nonprofit biomedical - research institution.