Life Sciences

Found results: 11545

Bioethics

Ban experiments on monkeys?

If the law "On saving monkeys in order to save money" is adopted, chimpanzees will stop infecting with hepatitis, but they will be deprived of pension allowances and released into the wild God knows where, and pharmaceutical companies will quietly experiment in Gabon.

20.06.2011
Genetics

Our Neanderthal Immunity

The proportion of Neanderthal and Denisovan leukocyte antigens, which play an important role in the immune system, in different populations of modern humans ranges from 50 to 90%.

20.06.2011
Cellular technologies

Olfactory epithelial stem cells will restore the brain

Stem cell transplantation of the olfactory epithelium of the nasal sinuses restores the ability of the damaged brain to associative thinking, spatial perception and long-term memory.

20.06.2011
Other life sciences

You can live without a pulse

An artificial heart from two rotary pumps does not "beat", but creates a continuous flow of blood that does not cause pulsation of blood vessels.

17.06.2011
Other life sciences

The reason for gray hair is the Wnt signaling path

Graying is caused by a violation of the signaling mechanism mediated by the Wnt protein involved in the regulation of many biological processes, including the interaction between two types of hair follicle stem cells.

17.06.2011
Biomedicine

Thymosin beta4: take a month before a heart attack

Scientists injected thymosin beta4 into mice daily for a week, after which they simulated a heart attack. Two weeks after the operation, the cells of the outer layers of the heart migrated inside and grouped around the injury zone.

14.06.2011
Nanotechnology

Proteins have become components of "dry" electrical circuits

To create protein-graphite electrical circuits, scientists had to invent not only a method for synthesizing photovoltaic proteins capable of functioning in air, but also a technology for measuring their electrical properties.

14.06.2011
Biomedicine

Contraceptive pills for men: another attempt

The retinoic acid receptor antagonist causes infertility in male mice – without side effects and passing after discontinuation of the drug. Perhaps in a few years, researchers will need male volunteers.

10.06.2011
Cellular technologies

Double breast augmentation: beauty requires sacrifice

A new method of plastic surgery, consisting in the transplantation of cells of your own adipose tissue after a preliminary increase in the internal volume of the breast, allows you to double the size of the breast.

09.06.2011
Nanotechnology

Dendrimers will highlight brain cancer

Modified by two functional groups, the dendrimer structure is able to penetrate the blood-brain barrier and show the position of cancer cells in brain tissues with fluorescent signals.

09.06.2011
Genetic engineering

Genetically modified plants, agriculture and society

The Parliamentary Assembly of a huge region is discussing the prospects for the use of genetically modified organisms at the same time as in the minds of the population, one mention of it causes utter confusion.

08.06.2011