News tagged with blood
In a serendipitous discovery, scientists at The Scripps Research Institute (TSRI) have found a way to turn bone marrow stem cells directly into brain cells.
Medical research Apr 22, 2013 | 5 / 5 (11) | 2 |
(Medical Xpress)—Akkermansia muciniphila is one of the many microbes that live in our intestines. This bacterium, which feeds on the intestine's mucus lining, comprises between 3 and 5 percent of the gut microbes of hea ...
Medical research May 14, 2013 | 4.8 / 5 (11) | 0 |
(Medical Xpress)—The first symptoms of major depression may be behavioral, but the common mental illness is based in biology—and not limited to the brain.
Psychology & Psychiatry May 23, 2013 | 4.9 / 5 (8) | 0 |
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) | 1 |
(Medical Xpress)—Organovo Holdings, Inc., a company that designs and creates functional human tissue has announced at this year's Experimental Biology Conference that it has developed a 3D printing technique ...
Medical research Apr 24, 2013 | 4.1 / 5 (8) | 0 |
(Medical Xpress)—Consumption of whole walnuts or their extracted oil can reduce cardiovascular risk through a mechanism other than simply lowering cholesterol, according to a team of Penn State, Tufts University ...
Health May 08, 2013 | 5 / 5 (5) | 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 |
Researchers may have found a way to block kidney-destroying inflammation and help damaged kidney cells recover.
Medical research Apr 16, 2013 | 4.6 / 5 (5) | 3 |
People with an Autism Spectrum Disorder (ASD) often have trouble communicating and interacting with others because they process language, facial expressions and social cues differently. Previously, researchers found that ...
Autism spectrum disorders Apr 15, 2013 | 5 / 5 (4) | 0 |
More than 100 doctors from around the world have signed a letter decrying the high cost of cancer drugs which reach $100,000 per year or more, and calling for pharmaceutical companies to ease prices.
Medications Apr 26, 2013 | 5 / 5 (4) | 2
(Medical Xpress)—A researcher at ETH Zurich is designing a realistic artery model with an implanted stent and is using a computer to simulate the blood flow through the stent. In doing so he is uncovering ...
Cardiology May 06, 2013 | 5 / 5 (4) | 0 |
(HealthDay)—Artificial blood vessels may one day reduce some complications of dialysis treatment in people with kidney failure, according to the results of early research in animals.
Cardiology Apr 24, 2013 | 4.8 / 5 (4) | 0
A study appearing in the Journal of Nutritional Biochemistry demonstrates that grapes are able to reduce heart failure associated with chronic high blood pressure (hypertension) by increasing the activity of several genes ...
Cardiology May 02, 2013 | 4.8 / 5 (4) | 0 |
Scientists reported new evidence today that a component of egg whites—already popular as a substitute for whole eggs among health-conscious consumers concerned about cholesterol in the yolk—may have another beneficial ...
Health Apr 09, 2013 | 5 / 5 (3) | 0
People who participate in sports have better attention span than those in poor physical health, study finds
New scientific evidence seems to confirm the famous Roman saying "Mens sana in corpore sano". Researchers from the University of Granada have demonstrated that people who normally practice sport have a better ...
Health Apr 10, 2013 | 5 / 5 (3) | 0
Blood is a specialized bodily fluid that delivers necessary substances to the body's cells — such as nutrients and oxygen — and transports waste products away from those same cells.
In vertebrates, it is composed of blood cells suspended in a liquid called blood plasma. Plasma, which comprises 55% of blood fluid, is mostly water (90% by volume), and contains dissolved proteins, glucose, mineral ions, hormones, carbon dioxide (plasma being the main medium for excretory product transportation), platelets and blood cells themselves. The blood cells present in blood are mainly red blood cells (also called RBCs or erythrocytes) and white blood cells, including leukocytes and platelets. The most abundant cells in vertebrate blood are red blood cells. These contain hemoglobin, an iron-containing protein, which facilitates transportation of oxygen by reversibly binding to this respiratory gas and greatly increasing its solubility in blood. In contrast, carbon dioxide is almost entirely transported extracellularly dissolved in plasma as bicarbonate ion.
Vertebrate blood is bright-red when its hemoglobin is oxygenated. Some animals, such as crustaceans and mollusks, use hemocyanin to carry oxygen, instead of hemoglobin. Insects and some molluscs use a fluid called hemolymph instead of blood, the difference being that hemolymph is not contained in a closed circulatory system. In most insects, this "blood" does not contain oxygen-carrying molecules such as hemoglobin because their bodies are small enough for their tracheal system to suffice for supplying oxygen.
Jawed vertebrates have an adaptive immune system, based largely on white blood cells. White blood cells help to resist infections and parasites. Platelets are important in the clotting of blood. Arthropods, using hemolymph, have hemocytes as part of their immune system.
Blood is circulated around the body through blood vessels by the pumping action of the heart. In animals having lungs, arterial blood carries oxygen from inhaled air to the tissues of the body, and venous blood carries carbon dioxide, a waste product of metabolism produced by cells, from the tissues to the lungs to be exhaled.
Medical terms related to blood often begin with hemo- or hemato- (also spelled haemo- and haemato-) from the Ancient Greek word αἶμα (haima) for "blood". In terms of anatomy and histology, blood is considered a specialized form of connective tissue, given its origin in the bones and the presence of potential molecular fibers in the form of fibrinogen.
For more information about Blood, read the full article at
This text uses material from Wikipedia and is available under the GNU Free Documentation License.