Quotes About Cells

The pituitary hormone prolactin, the same substance that stimulates milk flow in nursing mothers, seems to sensitize cells to electric current. Then the signal causes nearby cells to dedifferentiate and form a blastema, apparently by changing the way cell membranes pass calcium ions.

Conversely, I believe low-current silver electrodes stimulate bone formation directly—by dedifferentiating the marrow cells and perhaps also by stimulating the periosteal cells.

At this time, therefore, I must conclude that high-current electrodes might enhance the growth of any preexisting tumor cells in the electrical path—unlike low-current silver, which when negative had no effect on, and when positive suspended, mitosis of cancer cells in our lab.

By this time we'd also cleared up several more cases of osteomyelitis by reversing the battery and making the silver electrode positive for a day. It looked safe. There was no crossover of effects: When negative,the wire didn't make infectious bacteria grow, and when positive, it didn't destroy bone-forming cells or prevent them from growing when we switched the current to negative.

It seems reasonable that understanding what comes out of the blastema would be easier if we understood what goes into it, so the other major questions about regeneration have always been: What stimulates the blastema to form? And where do its cells come from?

Almost all of the cells in the human body are sterile. Only the sex cells—our "queen bees"—get to make copies of themselves for posterity. That the zillions of sterile cells act as if they were perfectly content with this arrangement is doubtless grounded in the fact that the r between them and the sex cells is 1;

Electron microscopes let us wander the remote universe of our own cells.

Justo antes de desaparecer, las palabras adquieren un olor nauseabundo y pulposo, como manojos de hierba muerta que el viento arremolina, formando pequeñas esferas secas, y se derraman del cerebro y de las cuerdas vocales, bajando por las células sanguíneas y los nervios hasta los rincones más remotos del cuerpo.

Brain cells create ideas. Stress kills brain cells. Stress is not a good idea

Activating oxygen can produce compounds called radicals that put oxidative stress on cells. Such stress could ultimately lead to cancer and other diseases.

All of the elements that these cells manufacture are proteins. Proteins control our immune system, digest our food, heal our wounds, catalyze chemical reactions, support the structural integrity of our bodies, provide elegant molecules to communicate between cells, and much more. In short, proteins are the expression of life (and the health of our bodies).

As my ability to observe my desired destiny got sharper and sharper, my cells began to reorganize themselves. I began to signal new genes in new ways, and then my body really started getting better faster. What

Almost all aspects of life are engineered at the molecular level, and without understanding molecules we can only have a very sketchy understanding of life itself.

How come if alcohol kills millions of brain cells, it never killed the ones that made me want to drink?

The difference is staggering, by a factor of 10. In the human gut alone, there are usually around 100 trillion bacteria, while in one entire human being there are only about 10 trillion cells, counting all types.

we begin as a microscopic electrical swarm. The lungs the brain the heart. Forty weeks later, six trillion cells get crushed in the vise of our mother's birth canal and we howl. Then the world starts in on us.

He found himself thinking of water, how it is never still, how even in our bodies water never relents: ceaselessly vibrating, each electron in each molecule in each cell orbiting, spinning, nine independent vectors of position and force, a rapture of movement.

We all come into existence as a single cell, smaller than a speck of dust. Much smaller. Divide. Multiply. Add and subtract. Matter changes hands, atoms flow in and out, molecules pivot, proteins stitch together, mitochondria send out their oxidative dictates; we begin as a microscopic electrical swarm. The lungs the brain the heart. Forty weeks later, six trillion cells get crushed in the vise of our mother's birth canal and we howl. Then the world starts in on us.

He is a man who understands the power of the German soil, who feels its dark prehistoric vigor thudding in his very cells.

Why can't healing happen as quickly as wounding? You twist an ankle, break a bone—you can be hurt in a heartbeat. Hour by hour, week by week, year by year, the cells in your body labor to remake themselves the way they were the instant before your injury. But even then you're never the same: not quite.

Every cell in a dying body winks out at its own pace.

I have always been interested - indeed, waylaid - by the leading edges of technology, even during my Ph.D. years when I pioneered (but did not publish) agarose gel electrophoresis for RNA fractionation. Also, much later, I was instrumental in showing that Green Fluorescent Protein and RNAi could be made to work in mammalian cells.

Hormonal changes permanently alter the breast's structure. And when a pregnancy is terminated through abortion, the process is interrupted, which leaves cells in a sate of transition. And they say cells in this state have a very high risk of becoming cancerous. So the woman's chances of developing breast cancer later in life my be greatly increased.

Detention cells in Hong Kong are not pleasant. In Thailand they are even worse. In Hong Kong you are at least allowed to see your lawyers.