News tagged with cells
Temporal processing in the olfactory system
The neural machinery underlying our olfactory sense continues to be an enigma for neuroscience. A recent review in Neuron seeks to expand traditional ideas about how neurons in the olfactory bulb might encode information about ...
Neuroscience
May 17, 2013 |
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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 |
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Study finds four new genetic risk factors for testicular cancer
A new study looking at the genomes of more than 13,000 men identified four new genetic variants associated with an increased risk of testicular cancer, the most commonly diagnosed type in young men today. The findings from ...
Genetics
May 12, 2013 |
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If you can't beat them, join them: Grandmother cells revisited
(Medical Xpress)—In the absence of any real progress in defining neuronal codes for the brain, the simple idea of the grandmother cell continues to percolate through the scientific and popular literature. Many r ...
Neuroscience
May 10, 2013 |
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Immune cells that suppress genital herpes infections identified
Fred Hutchinson Cancer Research Center and University of Washington scientists have identified a class of immune cells that reside long-term in the genital skin and mucosa and are believed to be responsible for suppressing ...
Immunology
May 08, 2013 |
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Restless legs syndrome, insomnia and brain chemistry: A tangled mystery solved?
Johns Hopkins researchers believe they may have discovered an explanation for the sleepless nights associated with restless legs syndrome (RLS), a symptom that persists even when the disruptive, overwhelming nocturnal urge ...
Neuroscience
May 07, 2013 |
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Effects of stress on brain cells offer clues to new anti-depressant drugs
Research from King's College London reveals the detailed mechanism behind how stress hormones reduce the number of new brain cells - a process considered to be linked to depression. The researchers identified a key protein ...
Neuroscience
May 06, 2013 |
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Scientists create personalized bone substitutes from skin cells
A team of New York Stem Cell Foundation (NYSCF) Research Institute scientists report today the generation of patient-specific bone substitutes from skin cells for repair of large bone defects. The study, led by Darja Marolt, ...
Medical research
May 06, 2013 |
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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 |
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Recent studies warn surveillance of bird flu strains is needed
(Medical Xpress)—Recent scientific papers from China suggest a vigilant watch should be kept on the development of bird flu viruses, as a new strain has been identified and previously known viruses have ...
Diseases, Conditions, Syndromes
May 03, 2013 |
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Genetic mutation linked with typical form of migraine
A research team led by a Howard Hughes Medical Institute investigator at the University of California, San Francisco has identified a genetic mutation that is strongly associated with a typical form of migraine.
Genetics
May 01, 2013 |
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Genomics to reshape endometrial cancer treatment
The most in-depth look yet at endometrial cancer shows that adding genomics-based testing to the standard diagnostic workup could change the recommended course of treatment for some women.
Cancer
May 01, 2013 |
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Making a window for drug delivery in the blood-brain barrier
(Medical Xpress)—The blood-brain barrier (BBB) prevents most large or hydrophilic (polar) molecules from getting into the brain. For many neurological diseases, like Parkinson's, the presence of the BBB ...
Medical research
Apr 30, 2013 |
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Mapping of cancer cell fuel pumps paves the way for new drugs
For the first time, researchers at Karolinska Institutet in Sweden have managed to obtain detailed images of the way in which the transport protein GLUT transports sugars into cells. Since tumours are highly dependent on ...
Cancer
Apr 28, 2013 |
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Fusion and cell death in the development of skeletal muscle
(Medical Xpress)—Membrane fusion is a highly regulated event, both inside cells, and between them. From the moment a sperm first fuses with an egg, subsequent developmental events depend upon its proper ...
Medical research
Apr 26, 2013 |
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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.
