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Topic: Red cell


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In the News (Fri 17 Feb 12)

  
  Red blood cell - Wikipedia, the free encyclopedia
Red blood cells are the most common type of blood cell and the vertebrate body's principal means of delivering oxygen from the lungs or gills to body tissues via the blood.
Red blood cells are also known as RBCs or erythrocytes (from Greek erythros for "red" and kytos for "hollow", with cyte nowadays translated as "cell").
Spherocytosis is a genetic disease that causes a defect in the red blood cell's cytoskeleton, causing the red blood cells to be small, sphere-shaped, and fragile instead of donut-shaped and flexible.
en.wikipedia.org /wiki/Red_blood_cell   (1470 words)

  
 American Red Cross Blood Services, New England Region, Maine, Massachusetts, New Hampshire, Vermont
Red blood cells are called erythrocytes and deliver oxygen to the tissues and return carbon dixoide from the tissues to the lungs.
Red cells are fully differentiated and do not require a nucleus to carry out the function of transporting oxygen and carbon dioxide.
A low red cell count is termed anemia and is often seen in patients receiving chemotherapy or radiation therapy for cancer and in end-stage renal disease.
www.newenglandblood.org /helping/redcells.htm   (458 words)

  
 Horse red blood cells
The red cells have the larger percentage as there are usually 6-8 million/ml as against white cells of 6-8 thousand/ml.
Horses with more of the less rigid cells will find it easier to move blood into the muscles and the lungs and so may be able to maintain greater period of stamina work than their more rigid cell competitors.
A horse with 5% rigid cells would have a tremendous advantage, all else being equal, and this may be an area that explains why some horses are superior to their fellows.
home.att.net /~horsenutrition101/redcell_2.html   (1358 words)

  
 Red Cell Dehydration in Sickle Cell Disease
Cells with a markedly increased Hb S concentration are a prominent feature of sickle cell disease, as a consequence of the loss of K, Cl and water from the erythrocyte.
One of the distinguishing characteristics of sickle erythrocytes is the presence of cell dehydration.
Cell age appears to be one determinant of K-Cl cotransport activity in human red cells, since the system is active almost exclusively in normal reticulocytes and not in normal mature red cells.
sickle.bwh.harvard.edu /clt.html   (2935 words)

  
 Special Operations.Com
Red Cell team members were expected to maintain their SEAL qualifications in diving, parachuting, and demolition.
This type of activity was certainly not unique to Red Cell, however the frequency of its occurrence and numerous mishaps that resulted directly from drinking have frequently been pointed out as a failure in discipline and leadership by Naval Special Warfare and conventional military officers of all branches.
Therefore, each scenario (as designed by Red Cell) had to first be approved by Admiral Lyons, then by the Vice Chief of Naval Operations and his staff, and finally by the Commander in Chief (CINC) of the theater in which the installation resided.
www.specialoperations.com /Navy/Red_Cell/Default.htm   (1533 words)

  
 Red Blood Cell Indices | AHealthyMe.com
Red blood cell indices are measurements that describe the size and oxygen-carrying protein (hemoglobin) content of red blood cells.
Red blood cell indices are additional measurements of red blood cells based on the relationship of these three test results.
Cells with a normal concentration of hemoglobin are called normochromic; cells with a lower than normal concentration are called hypochromic.
www.ahealthyme.com /topic/topic100587391   (1394 words)

  
 Red blood cell Summary
Red blood cells are suspended in plasma, which is the straw colored liquid part of the blood.
Too many red blood cells is referred to as polycythemia and may occur as an adaptation to living in mountains to compensate for reduced oxygen in the air.
Spherocytosis is a genetic disease that causes a defect in the red blood cell's cytoskeleton, causing the RBCs to be small, sphere-shaped, and fragile instead of donut-shaped and flexible.
www.bookrags.com /Red_blood_cell   (1629 words)

  
 Sickle Cell Anemia
Sickle cell anemia is an inherited blood disorder, characterized primarily by chronic anemia and periodic episodes of pain.
This is the result of damage to the spleen from the sickled red cells which prevents the spleen from destroying bacteria in the blood.
Pneumococcal infections used to be the principal cause of death in young children with sickle cell anemia until physicians began routinely giving penicillin on a preventive basis to infants who are identified at birth or in early infancy as having sickle cell anemia.
www.fbhc.org /Patients/Modules/sicklecell.cfm   (2696 words)

  
 Red Gold . Glossary | PBS
Any of several lymphocytes (as a helper T cell) that differentiate in the thymus, possess highly specific cell-surface antigen receptors, and include some that control the initiation or suppression of cell-mediated and humoral immunity (as by the regulation of T and B cell maturation and proliferation) and others that lyse antigen-bearing cells.
A large white blood cell with finely granulated chromatin dispersed throughout the nucleus that is formed in the bone marrow, enters the blood, and migrates into the connective tissue where it differentiates into a macrophage.
Any of the hemoglobin-containing cells that carry oxygen to the tissues and are responsible for the red color of vertebrate blood -- called also erythrocyte, red blood corpuscle, red cell, red corpuscle.
www.pbs.org /wnet/redgold/glossary.html   (903 words)

  
 dtm double red cell
Each Year, nearly 6,000 units of red blood cells are needed in the NIH Clinical Center to treat patients undergoing cancer therapy, organ and tissue transplants and other diseases that require blood transfusions.
Double red cell apheresis is a procedure that allows a donor to give two units of red cells at the same time.
To remove red cells, a needle is placed in your arm and the blood flows into a sterile, disposable plastic kit installed in a machine designed specifically for this purpose.
www.cc.nih.gov /dtm/dtm_double_red_cell.htm   (495 words)

  
 Red Cell Substitutes Enter Phase III Trials
The modern era of development of red cell substitutes began in the 1960s with the discovery that if the toxic stroma of the hemoglobin molecule were removed, hemoglobin-based solutions would be safe.
Five groups at the present time are testing other types of red cell substitutes in phase I, II, and III clinical investigations of sepsis, coronary artery bypass, and vascular surgery.
Greenburg predicted that second generation hemoglobin-based red cell substitutes will have further modifications of the heme pocket, liposome composition and structure, and they will come from a variety of sources including plants, yeasts, bacteria, and transgenic animals.
www.meds.com /conrad/acs/cell.html   (630 words)

  
 Red Cell - Horse Health Red Cell Liquid Vitamin Mineral Supplement @ Kyhorse.com
Red Cell is potent, reliable and homogenized for maximum consistency
Red Cell® is a palatable yucca-flavored Vitamin-Iron-Mineral feed supplement for horses formulated to provide supplemental vitamins and minerals that may be lacking or are in insufficient quantities in a horse's regular feed.
Feed Red Cell by mixing into daily feed ration or orally with a dose syringe.
www.kyhorse.com /store/supplements/general/redcell.htm   (180 words)

  
 Sickle Cell Disease   (Site not responding. Last check: 2007-11-03)
Sickle cell disease is an inherited disorder of the red blood cells characterized by abnormally shaped red cells.
He or she can also inherit a sickle cell gene from one parent and a different kind of abnormal gene from the other and end up with a different form of sickle cell disease, such as hemoglobin SC disease and hemoglobin S-thalassemia.
Symptoms of sickle cell disease vary and range from mild to severe, and symptoms may be less severe or different in children who have inherited a sickle cell gene from one parent and a different abnormal hemoglobin gene from the other.
www.kidshealth.org /parent/medical/heart/sickle_cell_anemia.html   (1510 words)

  
 Red Cell - Wikipedia, the free encyclopedia
Red Teams or Red Cells are U.S. government parlance for teams or units designed to test the effectiveness of U.S. tactics or personnel.
"Red Cell" was purported to be a U.S. Navy SEAL team which had been organized to attempt to infiltrate and otherwise test the security of U.S. military bases and other installations sensitive to U.S. security interests.
While this was indeed a promotion for Admiral Lyons, Richard Marcinko, and as a result, Red Cell, lost their main defender in the Pentagon (Admiral Lyons often handled phone calls concerning the behavior of Red Cell as well as Marcinko).
en.wikipedia.org /wiki/Red_Cell   (309 words)

  
 Sickle Cell Disease: Information for School Personnel   (Site not responding. Last check: 2007-11-03)
Splenic sequestration is a possible complication of sickle cell disease that occurs most commonly in children under 5 years of age, but can occur at any age It occurs when there is a sickling in the splenic vein resulting in the sudden entrapment of a large amount of blood in the spleen.
An acute, (sudden) drop in the red cell count is referred to as an aplastic crisis.
In sickle cell anemia, excess bilirubin causes jaundice (yellowing) which can be seen in the sclera (white portion) of the eyes, the color of the urine, and the color of the skin.
www.state.nj.us /health/fhs/sicklecell/complications.htm   (2107 words)

  
 Medical Animation Library: Red Blood Cell Production
Red blood cells are an important element of blood.
Red blood cells are formed in the red bone marrow of bones.
Stem cells in the red bone marrow called hemocytoblasts give rise to all of the formed elements in blood.
pennhealth.com /health_info/animationplayer/red_blood_cell.html   (372 words)

  
 Scientists discover secret behind human red blood cell's amazing flexibility
A human red blood cell is a dimpled ballerina, ceaselessly spinning, tumbling, bending, and squeezing through openings narrower than its width to dispense life-giving oxygen to every corner of the body.
“Red cells are one of the few kinds of cells in the body with no nucleus and only a thin layer of protein skeleton under their membrane: they are living bags of hemoglobin,” said Amy Sung, a professor of bioengineering at UCSD’s Jacobs School of Engineering and coauthor of the study.
Sung asked Skelton to collaborate on her red blood cell project because Skelton and his students have pioneered the development of rigorous scientific tools to analyze the movement and balance of forces in many types of tensegrity systems.
www.physorg.com /news7497.html   (985 words)

  
 Red Blood Cell Disorders - My Child Has - Children's Hospital Boston
Red blood cells are the components of blood that are responsible for carrying oxygen from the lungs to the rest of the body.
Hereditary spherocytosis is a rare blood disorder that is characterized by defects within the red blood cells that cause the cells to die prematurely.
Under a microscope the red blood cells of patients with the disorder are sphere shaped.
www.childrenshospital.org /az/Site1643/mainpageS1643P0.html   (292 words)

  
 High red blood cell count - MayoClinic.com
A normal red blood cell count ranges from 4.7 to 6.1 million cells per microliter (mcl) in males and 4.2 to 5.4 million cells per mcl in females.
Although a high red blood cell count is not a specific disease, it may be a sign of an underlying problem.
Treatment of a high red blood cell count is directed at the underlying cause.
www.mayoclinic.com /health/high-red-blood-cell-count/AN00490   (245 words)

  
 Sickle Cell Anemia Awareness Night
The spleen is the organ in the abdomen that removes bacteria and damaged red blood cells from the blood stream.
If the child has a variant for sickle cell disease, it means that one parent passed on a gene for Hb S and the other parent passed on a gene for another abnormal hemoglobin.
There is not enough Hb S in the red blood cells of people with sickle cell trait to cause the red cells to sickle except under some very special conditions.
www.nba.com /sixers/community/sickle_cell_night_041220.html   (1250 words)

  
 Red Cell Reference Laboratory | About This Lab
The Red Cell Reference Laboratory has supported the transfusion service of the Puget Sound Blood Center and served the Pacific Northwest as a regional reference laboratory for over 30 years.
Routine red blood cell antibody identification and red blood cell antigen typing are performed using standard serologic techniques.
The frozen red blood cell inventory consists of rare antigen negative units that are a source of compatible units for specific patients who have red cell alloantibodies against high-frequency antigens or multiple antigens.
www.psbc.org /lab_redcell/index.htm   (312 words)

  
 Red Ice - Cell Phone Dangers   (Site not responding. Last check: 2007-11-03)
We used the pulsed RF fields at a frequency of 2.45GHz that is commonly used in telecommunication to expose cultured human HL-60 cells.
Although the cell phone industry continues to claim that their products are safe, there is still no scientific data available to prove this.
EMFs which cell phones emit are similar to the ones that are emitted by a microwave oven.
www.red-ice.net /connections/more/cellphones.html   (327 words)

  
 eMedicine - Pure Red Cell Aplasia : Article Excerpt by: Paul Schick, MD
Background: Pure red cell aplasia (PRCA) describes a condition in which RBC precursors in bone marrow are nearly absent, while megakaryocytes and WBC precursors are usually present at normal levels.
Injury to stem cells in utero is believed to be the etiology of approximately 90% of cases of congenital PRCA (ie, Diamond-Blackfan syndrome).
The acute self-limited form is secondary to virus- and drug-induced impairment of erythroid progenitor cells.
www.emedicine.com /med/byname/pure-red-cell-aplasia.htm   (651 words)

  
 Homeland Security Employs Imagination (washingtonpost.com)
Homeland Security's Analytic Red Cell office employs a tactic that has been used for decades by U.S. intelligence agencies, the Pentagon and large corporations -- gathering together people from outside their insular bureaucracies to arrive at fresh insights.
Written reports on Red Cell's sessions are then forwarded to terrorism analysts inside the department, as well as to local and state police and security experts in private industry.
Red Cell has finished 10 reports this year, and six more are being prepared -- quickening the pace of reports in its first months of operation last year.
www.washingtonpost.com /wp-dyn/articles/A50534-2004Jun17.html   (969 words)

  
 Red blood cell definition - Medical Dictionary definitions of popular medical terms
Red cells contain hemoglobin and it is the hemoglobin which permits them to transport oxygen (and carbon dioxide).
The mature red blood cell (RBC) is a non-nucleated biconcave disk.
A red blood cell is sometimes simply referred to as a red cell.
www.medterms.com /script/main/art.asp?articlekey=15489   (201 words)

  
 MicroAngela - Red Blood Cell
Red blood cells are made in the bone marrow.
They start out with a nucleus, like other cells, but when they fill up with hemoglobin the nucleus is squished smaller and smaller until it disappears.
With no nucleus, red blood cells are fragile and live only about 120 days.
www.pbrc.hawaii.edu /bemf/microangela/rbc9.htm   (93 words)

  
 eMedicine - Pure Red Cell Aplasia : Article by Paul Schick, MD
Approximately 90% of cases are sporadic, and one suggestion is that the sporadic cases are caused by in utero damage to erythroid stem cells.
Diehl LF, Ketchum LH: Autoimmune disease and chronic lymphocytic leukemia: autoimmune hemolytic anemia, pure red cell aplasia, and autoimmune thrombocytopenia.
Freedman MH: Pure red cell aplasia in childhood and adolescence: pathogenesis and approaches to diagnosis.
www.emedicine.com /med/topic1967.htm   (6184 words)

  
 Red Blood Cell Indices Information on Healthline
A healthy person has an adequate number of correctly sized red blood cells that contain enough hemoglobin to carry sufficient oxygen to all the body's tissues.
chronic diseases, lower the number of red blood cells produced by the bone marrow.
These tests are the hematocrit, hemoglobin, and red blood cell count.
www.healthline.com /galecontent/red-blood-cell-indices   (826 words)

  
 American Red Cross Greater Chesapeake and Potomac Region   (Site not responding. Last check: 2007-11-03)
The Greater Chesapeake and Potomac Region of the American Red Cross is proud to offer the opportunity to donate two units of red blood cells in one donation.
By doing this, the machine is able to double the amount of red cells it would normally collect in a standard blood donation.
This means that double red cell donors may give the same amount of red cells three times per year, as they would if they were to donate whole blood six times per year.
www.my-redcross.org /html/doublethedifference.asp   (414 words)

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