Sentences with phrase «times a cell divides»

These caps shorten every time a cell divides, and short telomeres are a sign that the body's cells are wearing out and ageing.

But that imperfect copying also causes the telomeres themselves to be whittled away each time a cell divides.

Each time a cell divides, its telomeres shrink.

Copying billions of base pairs every time a cell divides demands high fidelity.

12 Telomeres, sequences of DNA at the tips of chromosomes, get shorter every time a cell divides; when they get too short, the cell dies.

Researchers have learned that telomeres grow shorter and shorter each time a cell divides; once they're gone, the cell dies.

Telomeres, the caps of DNA which protect the ends of chromosomes, shorten every time cells divide.

One day, doctors might be able to insert such devices into a cancer patient to tally how many times a cell divides and flag when to shut the cancer down.

Telomeres shorten every time a cell divides, and ultimately the loss of telomeres leads to cellular senescence, where cells cease to divide, and eventually, cell death.

Raquel Oliveira, first author of this study, explains: «Many cancer cells have these type of chromosomal abnormalities and we now show that this can bring additional problems every time a cell divides.»

Some of the sequence matched repetitive DNA in telomeres, the caps of chromosomes, which often shorten each time a cell divides and play an important role in aging.

Each time a cell divides, the telomere gets shorter, but its function had long been unclear.

However, each time a cell divides the specific binding pattern of the transcription factors is erased and has to be restored in both mother and daughter cells.

These telomeres become shorter every time a cell divides, which hinders their ability to ensure that the new cells are identical to the parent cells.

Telomeres are the caps that protect the ends of chromosomes and they shorten every time a cell divides.

Each time a cell divides, some of the telomere is lost.

Each time the cell divides, the telomeric DNA shrinks and will eventually fail to secure the chromosome ends.

Each time a cell divides in most animals, its chromosomes make a copy for the new cell.

Research from other scientists at Johns Hopkins, he says, had suggested that some tumors, particularly those that affect the nervous system, have mutations in the ATRX gene, which produces proteins that appear to maintain the length of telomeres, repetitive segments of DNA on the ends of chromosomes that typically shorten each time a cell divides.

The other evidence for the stem cell fatigue came from observations that van Andel - Schipper's white blood cells had drastically worn - down telomeres — the protective tips on chromosomes that burn down like wicks each time a cell divides.

The little tips of chromosomes get shorter every time a cell divides, and this shortening is a mark of cellular aging.

By age 9, their telomeres — the caps on the ends of chromosomes that shrink each time cells divide — can be as short as those of someone decades older.

Each time a cell divides, they get clipped a little bit shorter.

Our DNA and its architecture are duplicated every time our cells divide.

Normally these vital end caps protect the loose ends of chromosomes from being chewed up or joined together, but are themselves whittled down every time the cell divides.

«Their concentration becomes lower every time cells divide,» says Peter van Zijl, Ph.D., founding director of the Kirby Research Center for Functional Brain Imaging, «so our ability to see them diminishes..

One of our strongest natural defences against cancer is the gradual shortening of telomeres every time a cell divides.

Every time the cells divide, the tiny tumor doubles in size.

Each time our cells divide, a bit of that cap is lost.

You see, every time your cells divide your telomeres get shorter.

Hundreds of billions of cell divisions occur in the body daily, and each time a cell divides, it needs to replicate an identical set of DNA, or approximately 3 billion base pairs.

However, throughout your life, every time your cells divide, the telomeres shorten.

But every time our cells divide, the telomeres shrink.

Every time our cells divide, though, a bit of that cap is lost.

Telomeres are structures at the end of a chromosome that get shorter the more times a cell divides, making them a marker of biological age.

Telomeres are essential components that protect the ends of chromosomes and shorten each time a cell divides.

Not exact matches

«Rom 5:12 Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned:»... The clock in your cells was set to only divide X amount of times.

A single bacterial cell that divides every twenty minutes would multiply to a mass four thousand times greater than the earth's in just two days.

Before being attached to the uterine wall the ovum cells divide a lot of times and it becomes a zygote.

Visually, she is filming and analyzing time - lapse images of human embryos in the incubator and has been able to correlate various parameters of how cells divide with the probability that the embryos will make it to a full blastocyst stage by day 5 - 6 of culture.

To make stem cells the basis for safe medical treatments, however, the field would need the ability to tightly control stem cell pluripotency, the ability to become many cell types, and self - renewal or immortality, the ability to keep dividing and multiplying over time in constant turnover.

For one, melanoma cells are on the go immediately and at all times; they appear to both divide into more cells and rush to join clusters simultaneously.

Sperm cells divide and multiply 600 times by the time a father reaches age 50.

Every time a cell with linear chromosomes divides, it will lose a small piece of one of its strands of DNA.

In order to isolate the 3D structure of the chromosome during metaphase, the authors used a combination of chromosome conformation capture technologies (3C, 5C and Hi - C) developed by the Dekker lab over the last decade to map the points of contact along the mitotic chromosome in different cell types synchronized to divide at the same time.

Ibañes» and Caño Delgado's teams used three hypotheses to explain how cells know when to stop growing: a certain period of time passed since they got divided, they detect their root's position, or cells are able to detect their size.

It seems to control how many times cells in the cerebral cortex can divide, which controls how much space there is for neurons.

When cancer cells start dividing rapidly to form tumors, these cells are actually reverting to an earlier time in their development when they were supposed to divide rapidly.

At that time, scientists believed all cells were immortal — marinate them in the proper nutrients, and they would divide forever.

When a cell divides, the strands peel apart, and DNA polymerase builds matching strands one nucleotide at a time.