Life Sciences

Found results: 11545

Genetic engineering

Will Jurassic Park become a reality?

If we take into account that today the closest relatives of dinosaurs are birds, then we can say not only that "Jurassic Park" is far from reality, but also about the error of the screenwriters – because there little lizards hatched from crocodile eggs.

26.05.2008
Nanotechnology

Nanobiotechnology: a systematic approach to living

Professor Vadim Govorun, Deputy Director for Scientific Work of the State Research Institute of Physico-Chemical Medicine of Roszdrav, tells about what is happening in the rapidly developing field of nanobiotechnology.

26.05.2008
Other life sciences

Molecular genetic evolution of man

To understand how genes changed in evolution and these changes “made a person”, first consider a simpler question: how genes “make a person” in individual development.

23.05.2008
Genetic engineering

A supercomputer in a Petri dish

Scientists from the University of Missouri and Davidson College in the USA, led by Carmella Haynes, demonstrated the fundamental possibility of organizing biological computing systems in vivo (in a living organism).

21.05.2008
Other life sciences

DNA-based logic gates

American researchers have constructed logic elements AND, OR and XOR. DNA fragments about 24 nucleotides long are used as input for these elements; oligonucleotides are also used as output.

21.05.2008
Bioethics

Informed consent (1)

The term "informed consent" appeared in the English-speaking environment only in 1957, and in 1960 it became widespread.

20.05.2008
Biomedicine

Anticancer DNA vaccines

The review discusses the potential advantages of DNA vaccines for cancer immunotherapy compared to traditional protein vaccines and viral vectors. The proposed mechanisms of induction of the immune response developing in response to DNA immunization are described. The results of preclinical development of DNA vaccines and clinical experience of DNA immunization in the treatment of cancer are analyzed.

19.05.2008
Other life sciences

Fold.it : we are playing protein folding!

A key feature of FoldIt compared to other protein computer folding projects is that it requires something more from the participant than just the unused processor time of his staff.

16.05.2008
Other life sciences

Mirror for the brain

In many ways, the features of the human mind depend on the functional anatomy of the brain, but this anatomy was created gradually, and we need to understand the laws of brain development, the laws of evolution related to genes.

16.05.2008
Other life sciences

Why does stress make women eat?

The relationship between diet, psychological stress, social factors and environmental factors is very complex.

15.05.2008
Bioethics

Animals save people, and people interfere with this

Today's society reacts painfully to scientists' experiments on animals, but scientists cannot refuse to use experimental animals, simply because otherwise they will have to test new treatments directly on humans.

15.05.2008
Nanotechnology

What are the molecules "singing" about?

Many domestic developments in the field of "nanobio" are often not only not inferior to foreign analogues, but also surpass them in some ways. These, for example, include technologies created by scientists from the Nanobiotechnology laboratory of the Institute of Biomedical Chemistry of the Russian Academy of Sciences. One of their developments is based on recording the sounds of molecules.

15.05.2008
Biomedicine

The sin of gluttony is born in the intestines

The empty intestine secretes ghrelin, which is released into the blood and enters the hypothalamus. There ghrelin activates CaMKK2, which leads to an increase in the formation of neuropeptide Y, which directly stimulates appetite.

08.05.2008
Genetics

A new genetic code of overweight has been found

People with two copies of the genetic combination affecting the MC4R gene weigh 1.5 kg more, and those who inherited two copies of the FTO gene weigh 2-3 kg. The presence of both combinations can "add" 3.8 kg to a person.

07.05.2008
Other life sciences

Microbes: their names

The world of microbes is very diverse and requires classification. The first word in the name of the microorganism means genus, and the second is the specific name of the microbe. These names (usually Latin or Greek) are "speakers".

04.05.2008