News tagged with adaptations
Evidence of host adaptation of avian-origin influenza A virus
The connection between human avian-origin influenza A (H7N9) virus infection and environmental sources of the virus were determined based on clinical data, epidemiology, and virological characteristics of the three early ...
Diseases, Conditions, Syndromes
May 15, 2013 |
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Ebola's secret weapon revealed
Researchers have discovered the mechanism behind one of the Ebola virus' most dangerous attributes: its ability to disarm the adaptive immune system.
Medical research
May 02, 2013 |
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Two-pronged approach to immune activation could lead to vaccines that effectively shut down tumor expansion
Tumor cells often express proteins that set them apart from their healthy neighbors. These very same proteins can also help the immune system to recognize and destroy the cancer. Several research groups and ...
Cancer
Apr 26, 2013 |
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Vaccine adjuvant uses host DNA to boost pathogen recognition
Aluminum salts, or alum, have been injected into billions of people as an adjuvant to make vaccines more effective. No one knows, however, how they boost the immune response. In the March 19, 2013, issue of the Proceedings of ...
Medical research
Apr 05, 2013 |
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Writing can be a therapy after a traumatic stress
This study demonstrates that writing therapy resulted in significant and substantial short-term reductions in post traumatic symptoms (PTS) and comorbid depressive symptoms. Writing therapy is an evidence-based treatment ...
Psychology & Psychiatry
Apr 04, 2013 |
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The visual system as economist: Neural resource allocation in visual adaptation
(Medical Xpress)—It has long been held that in a new environment, visual adaptation should improve visual performance. However, evidence has contradicted this expectation: Adaptation sometimes not only ...
Neuroscience
Mar 30, 2013 |
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The immune system can delay healing of bone fractures
(Medical Xpress)—Researchers at Charité – Universitätsmedizin Berlin have succeeded in demonstrating an association between delayed bone fracture healing and increased concentration of specific immune cells in the blood ...
Medical research
Mar 22, 2013 |
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Insights into the immune system, from the fates of individual T cells
By charting the differing fates of individual T cells, researchers have shown that previously unpredictable aspects of the adaptive immune response can be effectively modeled. The crucial question: What determines ...
Medical research
Mar 20, 2013 |
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Caffeine 'can significantly protect against crash risk' for long distance heavy vehicle drivers, study says
Long distance commercial drivers who consume caffeinated substances such as coffee or energy drinks, to stay awake while driving, are significantly less likely to crash than those who do not, even though they ...
Health
Mar 19, 2013 |
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How the immune system positions its gatekeepers
(Medical Xpress)—For an immune response to get underway, an invading microbe must first be halted in the spleen, and then digested by immune cells known as 'dendritic cells', which guard specific portals. ...
Immunology
Mar 19, 2013 |
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New moms suffer more obsessive-compulsive symptoms than general population
A new mother may constantly worry and check to see if her baby is still breathing. Or she may fret about germs, obsessing whether she's properly sterilized the bottles, then wash and rewash them.
Psychology & Psychiatry
Mar 04, 2013 |
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Two studies reveal genetic variation driving human evolution
A pair of studies published by Cell Press on February 14th in the journal Cell sheds new light on genetic variation that may have played a key role in human evolution. The study researchers used an animal ...
Genetics
Feb 14, 2013 |
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Natural killer cells played a vital role in human evolution
(Medical Xpress)—Natural killer cells – a vital part of the immune system – have a dual role in protecting against infection and ensuring reproduction. Scientists suggest that the multi-tasking ability ...
Immunology
Feb 08, 2013 |
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Reassuring evidence: Anticancer drug does not accelerate tumor growth after treatment ends
Studies in animals have raised concerns that tumors may grow faster after the anticancer drug sunitinib is discontinued. But oncologists and physicists who collaborated to analyze data from the largest study ...
Cancer
Feb 07, 2013 |
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Immune system foiled by a hairpin
The innate immune system detects invasive pathogens and activates defense mechanisms to eliminate them. Pathogens, however, employ a variety of tricks to block this process. A new study shows how the measles virus thwarts ...
Immunology
Jan 22, 2013 |
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Adaptation
An adaptation in biology is a trait with a current functional role in the life history of an organism that is maintained and evolved by means of natural selection. An adaptation refers to both the current state of being adapted and to the dynamic evolutionary process that leads to the adaptation. Adaptations contribute to the fitness and survival of individuals. Organisms face a succession of environmental challenges as they grow and develop and are equipped with an adaptive plasticity as the phenotype of traits develop in response to the imposed conditions. The developmental norm of reaction for any given trait is essential to the concept of adaptation as it affords a kind of biological insurance or resilience to varying environments.
For more information about Adaptation, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
