With a standard Pap, a little brush scrapes off cells from the cervix, which are stored in a vial to examine for signs of cervical cancer.
It might be able to selectively turn off brain cells that are overactive, as in epilepsy.
Scientists don't know for sure, but it looks likely that these protein clumps kill off nerve cells, causing dementia.
At present doctors test for the presence of abnormal proteins called prions which are thought to cause the disease by killing off brain cells.
The nastiest-looking arteries might be stabilized with some form of local therapy, such as drug-coated stents, light-activated drugs to kill off inflamed cells or even gene therapy.
Starting with the creation of beer over 7, 000 years ago, human sleep aids have all worked the same way: by stimulating brain receptors that turn off brain cells.
FORBES: Can A Safer Ambien Make Billions? Merck Aims To Find Out
When gluten hits the gut in someone with celiac disease, it sets off an immune reaction which kills off the cells forming the inner lining of the small intestine.
Its causes have long been unknown, but increasing circumstantial evidence points to a toxic protein called amyloid peptide, which builds up into plaques and slowly chokes off brain cells.
Since then Deisseroth and Boyden have discovered other microbial proteins that can be used to turn brain cells off with light.
And when Taxol fails to kill off all cancerous cells, a tumor can grow back with resistant mutations, unimpeded on its morbid path.
The PARC group first considered putting the cells on a rotating platform like a CD-ROM but nixed that because centrifugal force in rotation might pull the cells off the platter.
That is when the virus releases its attack, spreading when the dead skin cells flake off the body naturally.
Researchers can then turn on and off just those brain cells in laboratory animals and see what happens.
Common problems include overactive oil glands, bacteria growth within follicles and pores and problems with the keratinization process, where cells are normally sloughed off the skin, pushed out of the hair follicle and replaced by new cells.
WSJ: As More Adults Get Acne, New Photodynmic Treatments Use Light
The scrub was fantastic, sloughing off all the old skin cells and leaving my skin feeling clean and tingly.
The surgery transplants a healthy thymus into the body, providing it with the ability to manufacture sufficient T-Cells to fight off infections.
FORBES: Indiana Medicaid Denies Life-Saving Transplant To Baby
It turns out that cells can flake off of tumors in the ovaries or the lining of the uterus, and float down to rest in the cervix, where Pap tests are performed.
It is hoped this combination will stimulate the immune system to recognising and destroying cancer cells, while at the same time preventing rapid re-population by any cells not killed off by the immune defences.
They reasoned that if stem cells were resistant in people as well as mice, then the proportion of stem cells within a tumour would increase as more vulnerable cells were killed off in disproportionate numbers.
Now, if the industry could only figure out the touchy issue of cost and the still touchier issue of stack replacement (and several signs suggest that moment may arrive sooner rather than later), fuel cells could take off in mainstream markets.
This contains oodles of cells that are brushed off the walls of the intestine during digestion.
Silicon ingot, from which you can slice off the wafers to make solar cells, has become much cheaper.
However, she said the research had not proved that loss of serotonin receptors was necessarily a sign that brain cells were being killed off.
Sir2 can turn off whole swaths of genes inside cells, keeping the DNA coiled up in a protected position and less exposed to environmental damage during hard times.
We got off track in America because adult stem cells are confused with embryonic stem cells.
It is testing compounds that block an enzyme, called Lp-PLA2, that attaches to cholesterol particles and chops off globs of fat that attract immune cells into the arteries.
Nokia (nyse: NOK - news - people ), the world's largest cellular handset maker, says it's putting off plans to develop phones powered by fuel cells.
The cells can then be turned on or off with pulses of blue and yellow light.
In order to operate, our cells constantly switch protein production on and off through specific gene functions.
The HIV virus reproduces with a cell, then virus particles bud off that cell's surface to infect other cells in the body.
应用推荐