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Cells in sentence

1993 examples of Cells in a sentence

Those shorten every time cells replicate.
When telomeres become too short, cells stop replicating and die, slowing the body's ability to renew itself.
With age, cells increasingly grow senescent, too, a process that halts the cell cycle in times of risk, like when cancer cells are proliferating.
Aging also involves stem cells that reside in many tissues and have the property of dividing without limits to replenish other cells.
As we get older, stem cells decrease in number and tend to lose their regenerative potential, affecting tissue renewal and maintenance of our organs original functions.
Other changes revolve around cells' ability to function properly.
The complex combinations of compounds in food can stimulate brain cells to release mood-altering norepinephrine, dopamine, and serotonin.
But getting to your brain cells is tricky, and amino acids have to compete for limited access.
Antioxidants in fruits and vegetables strengthen the brain to fight off free radicals that destroy brain cells, enabling your brain to work well for a longer period of time.
She knows how different wavelengths of light stimulate three types of cone cells in the retina, and she knows how electrical signals travel down the optic nerve into the brain.
Blood flow is cut off to the cardiac muscle and the oxygen-starved cells start to die within several minutes.
The grey matter processes information in the brain, directing signals and sensory stimuli to nerve cells, while white matter is mostly made up of fatty tissue and nerve fibers.
Water allows metabolism to occur, which is the process that drives all the biochemical reactions that take place in cells.
It's thought that as water becomes scarce and tardigrades enter their tun state, they start synthesize special molecules, which fill the tardigrade's cells to replace lost water by forming a matrix.
Components of the cells that are sensitive to dryness, like DNA, proteins, and membranes, get trapped in this matrix.
Once the organism is rehydrated, the matrix dissolves, leaving behind undamaged, functional cells.
When we're young, we constantly regenerate cells in order to replace dead and dying ones.
In addition, older cells don't perform their functions as well as young ones.
They're mostly made up of cells that can't divide and be replaced when damaged, so their bodies expire more quickly.
In these cases, genetic differences, like how each organism's cells respond to threats, often account for the discrepancies in longevity.
Black widow spiders have a disposable penis tip that breaks off inside the vagina blocking the attempts of his rivals, and bed bug males bypass a female's genitalia altogether using a syringe-like penis to inject sperm cells directly into her belly.
In humans, exposure to arsenic can damage the way cells communicate and function.
For instance, a scientist studying a new virus would consider, "How can I use the tools and techniques at hand to create an experiment that tells me how this virus infects the body's cells?
This system is a vast network of cells, tissues, and organs that coordinate your body’s defenses against any threats to your health.
The immune system relies on millions of defensive white blood cells, also known as leukocytes, that originate in our bone marrow.
These cells migrate into the bloodstream and the lymphatic system, a network of vessels which helps clear bodily toxins and waste.
First, phagocytes trigger the immune response by sending macrophages and dendritic cells into the blood.
As these circulate, they destroy any foreign cells they encounter, simply by consuming them.
A group of lymphocyte cells called T-cells go in search of infected body cells and swiftly kill them off.
And when body cells are damaged, they release chemicals that make fluid leak into the surrounding tissues, causing swelling.
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