Quotes About Cells

epigenetics, a booming field of biology that is unraveling the mysteries of how the environment influences the behavior of cells without changing the genetic code.

igual que en las células aisladas, el carácter de nuestra existencia se ve determinado no por nuestros genes, sino por nuestra respuesta a las señales ambientales que impulsan la vida.

When, for example, I added inflammatory chemicals to the tissue culture, the cells rapidly became the equivalent of macrophages, the scavengers of the immune system. What was also exciting to me was that the cells transformed even when I destroyed their DNA with gamma rays. These endothelial cells were

We're back to where we started in this chapter, the environment. In my own work in the laboratory, I saw over and over the impact a changed environment had on the cells I was studying. But it was only at the end of my research career, at Stanford, that the message fully sank in. I saw that endothelial cells, which are the blood vessel-lining cells I was studying, changed their structure and function depending on their environment. When

people who have the genes for unipolar major depression cannot turn off their stress response. When they experience stress from jobs, deadlines, family trouble, medical illness, or extreme excitement, large quantities of steroid stress hormones and norepinephrine come pouring into their brains and cannot be stopped. Every day, this stress overload is fatiguing and killing cells in their brains, bringing on unipolar major depression.

Networks stretch and alter to achieve new capabilities. Then they mesh as modules in yet grander webs of being. Creatures of a trillion cells achieved new peaks of networking. Yet they wove still higher ties—the ties of sociality.

According to biologist Lynn Margulis, it was this collaborative approach which allowed life to survive the first toxic pollutant holocaust—the spread in the atmosphere of a gas lethal to earth's horde of early inhabitants. The killer gas was oxygen. But mitochondria living in the new eukaryotic cells saved the day, gulping oxygen before it could do its harm and turning the murderous vapor into food for their protectress and for the other members of her cellular commune.

And still, even from the cells of the condemned, the message was going out: the class war was still on in that supposedly classless society, the United States.

Your body has something in the neighborhood of 40 trillion cells - quite a consulting committee. Call on it when you're confused or undecided. Relax quietly and ask your body what it has to say.

Every cell in your body contains the same genetic information.

What's very interesting is that when we look at human bodies, we look at our body as a singular entity when it turns out, no, if I could reduce us to a small size as the size of a cell and put you inside your body, rather than seeing a singular entity, what you would see is a metropolis with 50 trillion citizens.

Your body thinks radium is a great thing to pack into bone - where it kills some cells outright and scrambles the DNA of others, causing problems like cancer.

The cell is a city of production centres, each part working away like mad, and it's co-ordinated. Six trillion cells in a body - you can't help but be moved.

One of my motivations to become a blood specialist was to study malaria in red blood cells. But in science, you discover something and you want to go this way, but your work goes that way.

The forest is like a vast brain full of little brain cells, and in each cell is a thought. The thoughts are witches, sorcerers and mystics. It is an odd community, and it took me a while to get used to it myself.

trawl through the history of cancer research draws one up sharp: almost everything we know today about cancer – as a disease of the cells and of the genes – was suggested by someone way back before scientists had any way of testing their ideas, and who is often forgotten by those who later reveal them as facts when the world is more ready to listen.

The 're-embryonisation of cancer cells' was an attractive concept because of the obvious behavioural similarities between the two cell types, embryonic and cancer, and the hunt was on in a number of labs to identify proteins that were present in both normal embryo cells and tumour cells, but not in healthy, fully developed adult cells.

What specially excited him when his graduate student Daniel Linzer, who did the original experiments, showed him his results was that the rogue protein occurred in large quantities in the SV40-infected cells, suggesting it must be doing something important, and that it was interacting specifically with the viral oncogene, large T antigen. What's more, his team had found exactly the same protein also in uninfected fetal cells.

Love is not a verb. Love is a noun. Love's activity is people breathing, cells dividing, a dove taking a flight. This grammar of life not all can see.

Deci mutatia a avut loc în epoca — mitica sau nu, putin îmi pasa, eu, ca om de stiinta, nu ma las impresionat de cuvinte — a avut loc în epoca imediat urmatoare izgonirii din Paradis. Pedeapsa de care vorbeste capitolul III din cartea Genezei aceasta a fost: amnezia. Corpul omenesc a uitat pur si simplu ca fusese înzestrat cu o functiune capitala: autoregenerarea celulelor...

If we are ever to cope with climate change in any fundamental way, radical solutions on the social side are where we must focus, though. The relative efficiency of the next generation of solar cells is trivial by comparison.

Man's brain may be compared to an electric battery. It is a well-known fact that a group of electric batteries will provide more energy than a single battery. It is also a well-known fact that an individual battery will provide energy in proportion to the number and capacity of the cells it contains.

tap out a single grain of salt from a shaker. You could line up about ten skin cells along one side of it. You could line up about a hundred bacteria. Compared to viruses, however, bacteria are giants. You could line up a thousand viruses alongside that same grain of salt.

Based on their research, the Sanger scientists estimated that an embryo gains two or three new mutations every time its cells double.