News tagged with organisms
An increasing number of U.S. children are experiencing gastrointestinal issues that require interventions to resolve, according to research presented at Digestive Disease Week (DDW).
Health 34 minutes ago | not rated yet | 0 |
(AP)—The World Health Organization says a yellow fever booster vaccination given 10 years after the initial shot isn't necessary.
Diseases, Conditions, Syndromes May 17, 2013 | not rated yet | 0
A new Montréal study conducted by Dr. May Faraj, associate research professor at the Université de Montréal and invited scientist at the IRCM, along with her research team and medical collaborators, shows ...
Medical research May 17, 2013 | not rated yet | 0 |
Northwestern University scientists have shown a gene involved in neurodegenerative disease also plays a critical role in the proper function of the circadian clock.
Genetics May 16, 2013 | not rated yet | 0 |
Raising hopes for cell-based therapies, UC San Francisco researchers have created the first functioning human thymus tissue from embryonic stem cells in the laboratory. The researchers showed that, in mice, ...
Immunology May 16, 2013 | 4.8 / 5 (5) | 0 |
The virus has already killed her mother, and Kelly Gu's father lies critically ill with H7N9 bird flu in a Shanghai hospital bed—the only couple both infected in China's outbreak of the disease.
Diseases, Conditions, Syndromes May 16, 2013 | 3 / 5 (1) | 0
A deadly new respiratory virus related to SARS has apparently spread from patients to health care workers in eastern Saudi Arabia, health officials said Wednesday.
Diseases, Conditions, Syndromes May 16, 2013 | not rated yet | 0
Scientists at the University of California, Davis, detected the H1N1 (2009) virus in free-ranging northern elephant seals off the central California coast a year after the human pandemic began, according ...
Diseases, Conditions, Syndromes May 15, 2013 | not rated yet | 1 |
Two Saudi health workers have contracted the deadly coronavirus from patients, marking the first evidence of transmission in a hospital setting, the World Health Organization said Wednesday.
Diseases, Conditions, Syndromes May 15, 2013 | not rated yet | 0
Results after seven years of follow-up suggest that women considering abdominal sacrocolpopexy (surgery for pelvic organ prolapse [POP]) should be counseled that this procedure effectively provides relief from POP symptoms; ...
Surgery May 14, 2013 | 3 / 5 (1) | 0 |
The World Health Organization on Tuesday revised up the death toll from the SARS-like coronavirus from 18 to 20 worldwide, but said the two additional fatalities in Saudi Arabia were old cases.
Diseases, Conditions, Syndromes May 14, 2013 | not rated yet | 0
Two respiratory viruses in different parts of the world have captured the attention of global health officials—a novel coronavirus in the Middle East and a new bird flu spreading in China.
Diseases, Conditions, Syndromes May 13, 2013 | 5 / 5 (2) | 0
When trouble approaches, what do you do? Run for the hills? Hide? Pretend it isn't there? Or do you focus on the promise of rain in those looming dark clouds? New research suggests that the way you regulate ...
Psychology & Psychiatry May 13, 2013 | 3 / 5 (2) | 2 |
In the summer of 1968, a new strain of influenza appeared in Hong Kong. This strain, known as H3N2, spread around the globe and eventually killed an estimated 1 million people.
Diseases, Conditions, Syndromes May 10, 2013 | not rated yet | 0 |
A change to the so-called TERT gene considerably increases the risk of breast and ovarian cancer. This is the result of a current, multicenter study in which the University Department of Gynaecology and the ...
Cancer May 10, 2013 | not rated yet | 0
In biology, an organism is any living system (such as animal, plant, fungus, or micro-organism). In at least some form, all organisms are capable of response to stimuli, reproduction, growth and development, and maintenance of homeostasis as a stable whole. An organism may either be unicellular (single-celled) or be composed of, as in humans, many billions of cells grouped into specialized tissues and organs. The term multicellular (many-celled) describes any organism made up of more than one cell.
The terms "organism" (Greek ὀργανισμός - organismos, from Ancient Greek ὄργανον - organon "organ, instrument, tool") first appeared in the English language in 1701 and took on its current definition by 1834 (Oxford English Dictionary).
Scientific classification in biology considers organisms synonymous with life on Earth. Based on cell type, organisms may be divided into the prokaryotic and eukaryotic groups. The prokaryotes represent two separate domains, the Bacteria and Archaea. Eukaryotic organisms, with a membrane-bounded cell nucleus, also contain organelles, namely mitochondria and (in plants) plastids, generally considered to be derived from endosymbiotic bacteria. Fungi, animals and plants are examples of species that are eukaryotes.
More recently a clade, Neomura, has been proposed, which groups together the Archaea and Eukarya. Neomura is thought to have evolved from Bacteria, more specifically from Actinobacteria.
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