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Cells in sentence

1993 examples of Cells in a sentence

But since the dermal cells are relatively stable, much of the ink will remain deep in the skin for a person's whole life.
Your retinal ganglion cells notice that there is more white around the intersections because they are organized to increase contrast with lateral inhibition.
Your retinal ganglion cells don't respond as much at the crossings because there is more lateral inhibition for more white spots nearby compared to the lines, which are surrounded by black.
From deep space, our universe looks like a human brain cell, and then here we are in the deep ocean, and we're finding marine creatures and cells that can illuminate the human mind.
The top layer, called the epidermis, consists mostly of hardened cells, called keratinocytes, and provides protection.
With bleeding under control and the barrier secured, the body sends special cells to fight any pathogens that may have gotten through.
Among the most important of these are white blood cells, known as macrophages, which devour bacteria and damage tissue through a process known as phagocytosis, in addition to producing growth factors to spur healing.
About two to three days after the wound, the proliferative stage occurs, when fibroblast cells begin to enter the wound.
As epidermal cells divide to reform the outer layer of skin, the dermis contracts to close the wound.
For instance, do fibroblast cells arrive from the blood vessels or from skin tissue adjacent to the wound?
They might be bits of tissue, red blood cells, or clumps of protein.
The windows are actually caused by white blood cells moving through the capillaries along your retina's surface.
Because the space and the white blood cells are both more transparent to blue light than the red blood cells normally present in capillaries, we see a moving dot of light wherever this happens, following the paths of your capillaries and moving in time with your pulse.
This is the red blood cells that have bunched up behind the leukocyte.
And to understand these processes, we need to zoom down to the level of our individual cells.
Inside each of these cells, chemical reactions are constantly occurring, powered by the glucose and oxygen that our bodies convert into the energy-carrying molecule known as ATP.
So cells must constantly keep entropy in check by using energy to maintain their molecules in the very complicated formations necessary for biological functions to occur.
Similarly, the electric shock from a defibrillator doesn't jump-start an inanimate heart, but resynchronizes the muscle cells in an abnormally beating heart so they regain their normal rhythm.
See, if the cells are frozen, there's very little molecular movement, and diffusion practically stops.
Even if all of a person's cellular processes had already broken down, this could still conceivably be reversed by a swarm of nanobots, moving all the molecules back to their proper positions, and injecting all of the cells with ATP at the same time, presumably causing the body to simply pick up where it left off.
This is thought to have evolved through transparent cells covering the opening to prevent infection, allowing the inside of the eye to fill with fluid that optimizes light sensitivity and processing.
For example, the human retina is inverted, with light-detecting cells facing away from the eye opening.
This second airflow enters a region filled with highly specialized olfactory receptor cells, several hundred millions of them, compaired to our five million.
Like the operations manager in a company, its role is to make sure that the cells in your body are working properly.
This high-ranking organ is made up of lobules that each contains smaller cells called follicles, which store the hormones the thyroid sends out into your blood.
That maintains the body's metabolism, the series of reactions our cells perform to provide us with energy.
This hormonal notification from the thyroid gets the heart pumping more efficiently, and makes our cells break down nutrients faster.
Ultimately, the thyroid allows our cells to use energy, grow and reproduce.
That means the cells are overloaded with instructions to consume nutrients and oxygen.
The opposite problem is hypothyroidism, which happens when the thyroid sends out too few hormones, meaning the body's cells don't have as many messengers to guide them.
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