News tagged with cells
New immune system discovered
(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 |
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The compound in the Mediterranean diet that makes cancer cells 'mortal'
New research suggests that a compound abundant in the Mediterranean diet takes away cancer cells' "superpower" to escape death. By altering a very specific step in gene regulation, this compound essentially re-educates cancer ...
Cancer
May 20, 2013 |
4.9 / 5 (17) |
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Body clocks of depressed people altered at cell level, researchers show
Every cell in our bodies runs on a 24-hour clock, tuned to the night-day, light-dark cycles that have ruled us since the dawn of humanity. The brain acts as timekeeper, keeping the cellular clock in sync ...
Medical research
May 13, 2013 |
4 / 5 (19) |
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Researchers cure epilepsy in mice using brain cells
UCSF scientists controlled seizures in epileptic mice with a one-time transplantation of medial ganglionic eminence (MGE) cells, which inhibit signaling in overactive nerve circuits, into the hippocampus, a brain region associated ...
Neuroscience
May 05, 2013 |
4.5 / 5 (14) |
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Research reveals possible reason for cholesterol-drug side effects
The U.S. Food and Drug Administration and physicians continue to document that some patients experience fuzzy thinking and memory loss while taking statins, a class of global top-selling cholesterol-lowering ...
Medical research
May 10, 2013 |
4.4 / 5 (12) |
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Making cancer less cancerous: Blocking a single gene renders tumors less aggressive
Researchers at Johns Hopkins have identified a gene that, when repressed in tumor cells, puts a halt to cell growth and a range of processes needed for tumors to enlarge and spread to distant sites. The researchers hope that ...
Cancer
May 02, 2013 |
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Study IDs key protein for cell death, offers way to kill cancer cells by forcing them into programmed-death pathway
When cells suffer too much DNA damage, they are usually forced to undergo programmed cell death, or apoptosis. However, cancer cells often ignore these signals, flourishing even after chemotherapy drugs have ...
Genetics
May 14, 2013 |
5 / 5 (9) |
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Discovery of new hormone opens doors to new type 2 diabetes treatments
Harvard School of Public Health (HSPH) researchers have discovered that a particular type of protein (hormone) found in fat cells helps regulate how glucose (blood sugar) is controlled and metabolized (used for energy) in ...
Diabetes
May 07, 2013 |
4.6 / 5 (8) |
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Insight into the dazzling impact of insulin in cells
Australian scientists have charted the path of insulin action in cells in precise detail like never before. This provides a comprehensive blueprint for understanding what goes wrong in diabetes.
Medical research
May 21, 2013 |
4.6 / 5 (8) |
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New cancer driver found: Monoclonal antibody therapy stops tumor growth in mice
(Medical Xpress)—Approximately 90 percent of cancers start within tissues that form the inner linings of various organs. Decades of accumulated genetic mutations can, on occasion, induce cells specialized ...
Cancer
May 08, 2013 |
5 / 5 (7) |
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Drugs found to both prevent and treat Alzheimer's disease in mice
Researchers at USC have found that a class of pharmaceuticals can both prevent and treat Alzheimer's Disease in mice.
Alzheimer's disease & dementia
May 21, 2013 |
5 / 5 (7) |
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Reducing caloric intake delays nerve cell loss
Activating an enzyme known to play a role in the anti-aging benefits of calorie restriction delays the loss of brain cells and preserves cognitive function in mice, according to a study published in the May ...
Neuroscience
May 21, 2013 |
5 / 5 (7) |
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Brain research shows two parents may be better than one
A team of researchers at the University of Calgary's Hotchkiss Brain Institute (HBI) have discovered that adult brain cell production might be determined, in part, by the early parental environment. The study suggests that ...
Medical research
May 01, 2013 |
4.9 / 5 (7) |
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Ketamine shows significant therapeutic benefit in people with treatment-resistant depression
Patients with treatment-resistant major depression saw dramatic improvement in their illness after treatment with ketamine, an anesthetic, according to the largest ketamine clinical trial to-date led by researchers from the ...
Psychology & Psychiatry
May 19, 2013 |
4.9 / 5 (7) |
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Do salamanders hold the solution to regeneration?
Salamanders' immune systems are key to their remarkable ability to regrow limbs, and could also underpin their ability to regenerate spinal cords, brain tissue and even parts of their hearts, scientists have ...
Medical research
May 20, 2013 |
4.9 / 5 (7) |
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Cell (biology)
The cell is the structural and functional unit of all known living organisms. It is the smallest unit of an organism that is classified as living, and is often called the building block of life. Some organisms, such as most bacteria, are unicellular (consist of a single cell). Other organisms, such as humans, are multicellular. (Humans have an estimated 100 trillion or 1014 cells; a typical cell size is 10 µm; a typical cell mass is 1 nanogram.) The largest known cell is an unfertilized ostrich egg cell.
In 1835 before the final cell theory was developed, a Czech Jan Evangelista Purkyně observed small "granules" while looking at the plant tissue through a microscope. The cell theory, first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells. All cells come from preexisting cells. Vital functions of an organism occur within cells, and all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells.
The word cell comes from the Latin cellula, meaning, a small room. The descriptive name for the smallest living biological structure was chosen by Robert Hooke in a book he published in 1665 when he compared the cork cells he saw through his microscope to the small rooms monks lived in.
For more information about Cell (biology), read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
