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Tag: "order" at biology news

Viral protein is an effective preventative against infection

...the bacteria’s cell wall, killing the bacteria, in order to escape. Fischetti’s lab has studied many different lysins and found that they work even from outside the bacterial cell as well as from the inside. In addition, unlike antibiotics, which kill many of the body’s beneficial bacteria along with the d...

New hereditary breast cancer gene discovered

...his syndrome should be receive early mammograms in order to discover breast cancer at an early stage. "We have already started to use this new knowledge in our work with patients and now recommend regular mammograms for young women with this syndrome. Several early cases of breast cancer have already b...

Thinking with the spinal cord?

...his entire, complex system must work as a whole in order to successfully create a single motion. The new research shows that even if we repeat a certain motion with high accuracy, the involved nerve cells never repeat their activity patterns. This particular observation reflects the organisation of the ner...

How T lymphocytes attack

...me, how T lymphocytes infiltrate a solid tumour in order to fight it. These "defenders" methodically encircle the enemy positions and "patrol" until they meet a tumour cell, which they have previously learnt to recognise. They then halt to eliminate it, before resuming their rounds. The rapidity of the ...

New nanotechnology able to examine single molecules, aiding in determining gene expression

...anotechnology that can examine single molecules in order to determine gene expression, paving the way for scientists to more accurately examine single cancer cells, has been developed by an interdisciplinary team of researchers at UCLA's California Nanosystems Institute (CNSI), New York University's Coura...

Genomics throws species definition in question for microbes

...nts and recommendations. In the late 1800s, in order to make sense of the vast diversity of microbiological organisms, microbial taxonomists developed a system of placing microorganisms into categories in which each organism was granted a "genus" and "species" designation. At the time, physical (or ph...

The influence of the menstrual cycle on the female brain

...es modulate the reward system neuron network. In order to answer this question, the team developed an exp...h the estrogens do not oppose the progesterone. In order to determine the gender-related differences of reward system activation, the same experiment was car...

Common parasitic infection leads to increased risk for HIV infection

...udies are either very large or of long duration in order to demonstrate such an effect." Their results showed a 1.5-fold increased risk of HIV infection among women with trichomoniasis. "What this means is that a woman with trichomoniasis is at about fifty percent greater risk for acquiring HIV than a ...

Virtual duck bills demonstrate species coexistence

... particle sizes than species with wide spacing. In order for variation in bill morphology to lead to resource partitioning, each trait must impose both costs and benefits on foraging ducks. It is the trade-off between these costs and benefits that allows resources to be partitioned." "Foraging ducks are ...

Genes and genius: Researchers confirm association between gene and intelligence

... to measure performance IQ may be to ask people to order pictures correctly to tell a story," Dick explains... the test would have to put those pictures into an order that tells the story of how the child dropped the vase and broke it and then cried." The research...

Reversing cancer cells to normal cells

... that promote tumor growth and metastasis. In order to better understand what signals the melanoma cells are sending and receiving, Dr. Hendrix and her colleagues used the microenvironment of the zebrafish to study whether the tumor cells could communicate with the zebrafish stem cells and affect thei...

Cholera pathogen reveals how bacteria generate energy to live

...ng this battery to create energy," she said. In order to learn how the enzyme works, researchers are trying to get an idea of its three-dimensional structure. "The enzyme is like two machines together ?imagine the turbine and generator of a hydroelectric dam. One is the source of energy; the other uses ...

The great escape -- fleeing fish fall in line

...in a given rank, indicating that the chronological order of escape responses within a school is maintained ...dency for keeping a relatively fixed chronological order of escape. This implies that in a given school certain individuals may have a greater influence on ...

Monitoring poisons in the environment -- a woolly matter

...es provided by the British Wool Marketing Board in order to provide regional and national focus to this work. In addition, it is hoped that sheep can be of future use in bio-remediation studies on brownfield sites. Experimental method: A handful of wool was taken from shoulder area of rare and heritage...

Virginia Tech's System X supercomputer provides super tool for simulation of cell division

... of the ‘parameters’ in the model equations in order to create an accurate representation of what is going on inside the cell. A simple example is the conversion between Fahrenheit and Celsius temperatures, said mathematician Layne Watson. "You could use several pairs of Fahrenheit and Celsius readings...

Common cold virus may kill breast cancer cells

...s, and the way ahead for breast cancer research in order to have the greatest impact on the disease. The NBCF has thrown its weight behind a National Action Plan for Breast Cancer Research and Funding, developing sustainable research collaborations, which could halve the time it will take to answer the b...

Stress hormones may play new role in speeding up cancer growth

...aking down the scaffolding that cells attach to in order to maintain their shape. The third compound, vascular endothelial growth factor (VEGF), is important in the growth of new blood vessels into tumor cells. Earlier work by researcher Anil Sood at the University of Texas had shown that the same stres...

St. Jude announces breakthrough in eye cancer treatment

...ns generally remove the eye that has the cancer in order to prevent the disease from spreading. However, children with bilateral retinoblastoma pose a significant challenge to physicians, who are reluctant to remove both eyes from young children, said Matthew Wilson, M.D., a surgeon in the St. Jude ophthal...

Low levels of neurotransmitter serotonin may perpetuate child abuse across generations

...t all abused children grow up to be abusers." In order to study the possible effects of early abuse on brain development, the team watched the mothers as they parented to note hitting and other negative behaviors toward their infants, and took samples of their cerebrospinal fluid to measure the metabolit...

End-of-life care can be improved

...for additional research and quality improvement in order to realize the potential for improving the care delivered to critically ill patients at the end of life as well as the care provided to their families. The supplement resulted from the conference, "Improving the Quality of End-of-Life Care in the ...

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