News tagged with microbes
(Medical Xpress)—A research team, led by Jeremy Barr, a biology post-doctoral fellow, unveils a new immune system that protects humans and animals from infection.
Immunology May 20, 2013 | 4.8 / 5 (30) | 9 |
Nitric oxide (NO), a gas with many biological functions in healthy cells, can also help some cancer cells survive chemotherapy. A new study from MIT reveals one way in which this resistance may arise, and ...
Cancer Apr 08, 2013 | 5 / 5 (1) | 0 |
(Medical Xpress)—Researchers at UC Davis have shown how the innate immune system distinguishes between dangerous pathogens and friendly microbes. Like burglars entering a house, hostile bacteria give themselves away by ...
Immunology Apr 01, 2013 | 4.3 / 5 (3) | 0 |
Researchers at The Johns Hopkins University and Yale University have discovered that a specialized receptor, normally found in the nose, is also in blood vessels throughout the body, sensing small molecules ...
Medical research Feb 26, 2013 | 5 / 5 (5) | 0 |
It's established dogma that the immune system develops a "memory" of a microbial pathogen, with a correspondingly enhanced readiness to combat that microbe, only upon exposure to it—or to its components though a vaccine. ...
Immunology Feb 07, 2013 | 5 / 5 (13) | 0 |
A study of young twins in Malawi, in sub-Saharan Africa, finds that bacteria living in the intestine are an underlying cause of a form of severe acute childhood malnutrition.
Medical research Jan 30, 2013 | 5 / 5 (4) | 1 |
Early life exposure to normal bacteria of the GI tract (gut microbes) protects against autoimmune disease in mice, according to research published on-line in the January 17 edition of Science. The study ...
Immunology Jan 17, 2013 | 5 / 5 (1) | 0 |
Our bodies contain far more microbial genes than human genes. And a new study suggests that just as human DNA varies from person to person, so too does the massive collection of microbial DNA in the intestine.
Medical research Dec 05, 2012 | 5 / 5 (4) | 0 |
Scientists at Washington University School of Medicine in St. Louis have identified a protein essential to repairing the intestine's inner lining.
Medical research Sep 06, 2012 | 4 / 5 (3) | 0 |
Vaccines and antibiotics may someday join caloric restriction or bariatric surgery as a way to regulate weight gain, according to a new study focused on the interactions between diet, the bacteria that live in the bowel, ...
Immunology Aug 26, 2012 | 5 / 5 (1) | 0 |
Immune system molecule HD6 weaves cobweb-like nanonets to snag Salmonella, other intestinal microbes
A team of researchers led by UC Davis Health System has found that human alpha-defensin 6 (HD6) a key component of the body's innate defense system binds to microbial surfaces and forms "nanonets" ...
Medical research Jun 21, 2012 | 5 / 5 (4) | 1 |
Herpes and other viruses that attack the nervous system may thrive by disrupting cell function in order to hijack a neuron's internal transportation network and spread to other cells.
Medical research May 30, 2012 | 5 / 5 (3) | 0 |
Researchers undertake massive study of gut bacteria differences between people in different countries
(Medical Xpress) -- One area of human biology that is still a major mystery is the nature of the relationship between microorganisms (microbiomes) that exist in the gut and the health of the human host. Crohn's ...
Medical research May 10, 2012 | 5 / 5 (3) | 0 |
UCLA researchers pinpointed a new mechanism that potently activates T-cells, the group of white blood cells that play a major role in fighting infections.
Medical research Mar 25, 2012 | 5 / 5 (1) | 0 |
For the first time, researchers have analyzed the multitude of microorganisms residing in the human gut as a complex, integrated biological system, rather than a set of separate species. Their approach has ...
Medical research Jan 10, 2012 | 5 / 5 (10) | 0 |
A microorganism (from the Greek: μικρός, mikrós, "small" and ὀργανισμός, organismós, "organism"; also spelled micro organism or micro-organism) or microbe is an organism that is microscopic (usually too small to be seen by the naked human eye). The study of microorganisms is called microbiology, a subject that began with Anton van Leeuwenhoek's discovery of microorganisms in 1675, using a microscope of his own design.
Microorganisms are very diverse; they include bacteria, fungi, archaea, and protists; microscopic plants (called green algae); and animals such as plankton, the planarian and the amoeba. Some microbiologists also include viruses, but others consider these as non-living. Most microorganisms are unicellular (single-celled), but this is not universal, since some multicellular organisms are microscopic, while some unicellular protists and bacteria, like Thiomargarita namibiensis, are macroscopic and visible to the naked eye.
Microorganisms live in all parts of the biosphere where there is liquid water, including soil, hot springs, on the ocean floor, high in the atmosphere and deep inside rocks within the Earth's crust. Microorganisms are critical to nutrient recycling in ecosystems as they act as decomposers. As some microorganisms can fix nitrogen, they are a vital part of the nitrogen cycle, and recent studies indicate that airborne microbes may play a role in precipitation and weather.
Microbes are also exploited by people in biotechnology, both in traditional food and beverage preparation, and in modern technologies based on genetic engineering. However, pathogenic microbes are harmful, since they invade and grow within other organisms, causing diseases that kill millions of people, other animals, and plants.
For more information about Microorganism, read the full article at
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