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Topic: Blood cell count


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In the News (Mon 28 May 12)

  
  Glossary
Blood is composed of a liquid portion called plasma and three other components: red blood cells, white blood cells and platelets.
In umbilical cord blood transplantation, the use of stem cells in blood removed from the umbilical cords of newborns (a very rich source) is used for transplantation.
A blood vessel carrying blood which is relatively lacking in oxygen from the tissues towards your heart and lungs.
www.curesearch.org /glossary   (5943 words)

  
  White Blood Cell Count and Differential Information on Healthline
Cells are identified by the shape and appearance of the nucleus, the color of cytoplasm (the background of the cell), and the presence and color of granules.
Basophil—White blood cell that increases in response to parasitic infections and allergic reactions.
Neutrophil—White blood cell that increases in response to bacterial infection.
www.healthline.com /galecontent/white-blood-cell-count-and-differential   (845 words)

  
  Complete blood count - Wikipedia, the free encyclopedia
The cells that circulate in the bloodstream are generally divided into three types: white blood cells (leukocytes), red blood cells (erythrocytes), and platelets or thrombocytes.
In the past, counting the cells in a patient's blood was performed manually, by viewing a slide prepared with a sample of the patient's blood under a microscope (a blood film, or peripheral smear).
Counting chambers that hold a specified volume of diluted blood (as there are far too many cells if it is not diluted) are used to calculate the number of red and white cells per litre of blood.
en.wikipedia.org /wiki/Blood_cell_count   (957 words)

  
 White blood cell count definition - Cancer information on MedicineNet.com
White blood cells are the infection-fighting cells in the blood and are distinct from the red (oxygen-carrying) blood cells known as erythrocytes.
All the types of white blood cells are reflected in the white blood cell count.
The normal range for the white blood cell count varies between laboratories but is usually between 4,300 and 10,800 cells per cubic millimeter of blood.
www.medterms.com /script/main/art.asp?articlekey=9983   (255 words)

  
 White blood cell count and differential
The white blood cell count and differential determine the number of white blood cells and the percentage of each type of white blood cell in a person's blood.
Cells are identified by the shape and appearance of the nucleus, the color of cytoplasm (the background of the cell), and the presence and color of granules.
White blood cell that increases in response to parasitic infections and allergic reactions.
www.lifesteps.com /gm/Atoz/ency/white_blood_cell_count_and_differential.jsp   (859 words)

  
 Blood count
A complete blood count is actually a series of tests in which the numbers of red blood cells, white blood cells, and platelets in a given volume of blood are counted.
In addition to counting actual numbers of red cells, white cells, and platelets, the automated cell counters also measure the hemoglobin and calculate the hematocrit and the red blood cell indices (measures of the size and hemoglobin content of the red blood cells).
A differential white cell count is done by staining a smear of the patient's blood with a Wright's stain, allowing the different types of white cells to be clearly seen under the microscope.
www.healthatoz.com /healthatoz/Atoz/ency/blood_count.jsp   (938 words)

  
 NMDP - Glossary
A procedure where blood is drawn from a patient's or donor's arm and circulated through a machine that removes certain cells such as stem cells, white blood cells or platelets.
Stem cells from embryos are not used for marrow or blood stem cell transplants.
A stem cell from the blood of the umbilical cord and placenta.
www.marrow.org /GLOSSARY   (3142 words)

  
 Lymphoma Information Network - Testing: Blood Counts
Blood cell counts are used during diagnosis, treatment, and follow-up to determine the health of the patient.
Blood counts cannot by themselves determine whether a person has lymphoma but there are values that can determine whether everything is fine or if more tests are needed.
During treatment blood counts are very important to determine if that treatment is depleting healthy blood cells in addition to cancerous cells.
www.lymphomainfo.net /tests/bloodcounts.html   (806 words)

  
 Encyclopedia of Nursing and Allied Health: White blood cell count and differential
Sources of error in manual WBC counting are largely due to variance in the dilution of the sample and the distribution of cells in the chamber, and the small number of WBCs that are counted.
White cell counts are usually performed using an automated instrument, but may be done manually using a microscope and a counting chamber especially when counts are very low, or the person has a condition known to interfere with an automated WBC count.
White blood cells are identified by their size, the shape and texture of the nuclear chromatin, cytoplasmic and nuclear staining, and the presence and color of granules in the cytoplasm.
www.findarticles.com /p/articles/mi_gGENH/is_/ai_2699003855   (1373 words)

  
 White Blood Cell Differential: The Test
The white blood cell (WBC) differential is used to evaluate the distribution and morophology of WBCs, providing more specific information about a patient's immune system than the WBC count alone.
An eosinophil count is sometimes ordered as a follow-up test when an elevated or depressed eosinophillevel is reported.
To assess the severity of allergic reactions (eosinophil count).
www.diagnostic-medical-tests.com /hematology-coagulation-tests/white-blood-cell-differential.htm   (536 words)

  
 Complete Blood Count (CBC)
The number of white blood cells is sometimes used to identify an infection or monitor the body's response to cancer treatment.
If the count is too high (a condition called polycythemia vera), there is a risk that the red blood cells will clump together and block tiny blood vessels (capillaries).
Blood cells with unusual shapes or sizes can help diagnose many blood diseases, such as leukemia, malaria, or sickle cell anemia.
www.webmd.com /a-to-z-guides/Complete-Blood-Count-CBC   (751 words)

  
 White Blood Cell Count And Differential | AHealthyMe.com
White blood cell that increases in response to parasitic infections and allergic reactions.
Blood test that determines the percentage of each type of white blood cell in a person's blood.
White blood cell that increases in response to bacterial infection.
www.ahealthyme.com /topic/topic100587682   (756 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   (244 words)

  
 Differential white blood cell count
A total white blood cell count is not necessarily indicative of the severity of a disease, since some serious ailments may show a low white cell count.
A differential white cell count consists of an examination of blood to determine the presence and the number of different types of white blood cells.
To prepare a blood smear, a blood specimen is spread across a glass slide, stained to enhance leukocyte identification, and examined microscopically.
www.tpub.com /corpsman/236.htm   (747 words)

  
 Heart & Vascular Education Foundation - Complete  Blood Cell Count (CBC)   (Site not responding. Last check: 2007-09-15)
The complete blood count, which is called a CBC, is one of the most common blood tests and is usually done as part of a routine check-up.
When you have an infection, increased numbers of white blood cells are sent from the bone marrow to attack the bacteria or virus that is causing the infection.
The different types of white blood cells can be identified by examining a blood sample under a microscope or using a laboratory instrument known as a hematology analyzer.
www.hvclinic.com /hvedu/hvef10a.html   (681 words)

  
 MedlinePlus Medical Encyclopedia: WBC count
Blood is drawn from a vein, usually from the inside of the elbow or the back of the hand.
There are several types of white blood cells (WBCs) that normally appear in the blood: neutrophils (polymorphonuclear leukocytes; PMNs), band cells (slightly immature neutrophils), T-type lymphocytes (T cells), B-type lymphocytes (B cells), monocytes, eosinophils, and basophils.
This usually means increased numbers of cells and an increase in the percentage of immature cells (mainly band cells) in the blood.
www.nlm.nih.gov /medlineplus/ency/article/003643.htm   (737 words)

  
 Complete Blood Count (CBC) Information on MedicineNet.com
The complete blood count is the calculation of the cellular (formed elements) of blood.
A major portion of the complete blood count is the measure of the concentration of white blood cells, red blood cells, and platelets in the blood.
Platelets are not complete cells, but actually fragments of cytoplasm from a cell found in the bone marrow called a megakaryocyte.
www.medicinenet.com /complete_blood_count/article.htm   (583 words)

  
 The blood and circulation
Although blood looks like a red liquid, if some is left in a test tube it separates out into a pale liquid called plasma and a solid layer of blood cells.
Red blood cells are able to attach to oxygen to carry it within the circulation to the tissues.
Blood cells are made in the bone marrow in the skull, ribs, sternum (breast bone), spine and pelvis.
www.cancerhelp.org.uk /help/default.asp?page=116   (1204 words)

  
 The Analyst - Internet Health Report: Condition: Low White Count   (Site not responding. Last check: 2007-09-15)
The white blood cell count is done routinely as part of a complete blood count.
A low white blood cell count can be the result of infection, make an individual more susceptible to outside infections or allow multiplication of organisms within the body which would normally kept in check by a healthy immune system.
A low white blood cell count is suggestive of active lupus (although certain viruses can also give a low white count) while a high count suggests infection.
www.digitalnaturopath.com /cond/C269841.html   (1427 words)

  
 White Blood Cell Count and Differential Information on Healthline
Sources of error in manual WBC counting are largely due to variance in the dilution of the sample and the distribution of cells in the chamber, and the small number of WBCs that are counted.
White cell counts are usually performed using an automated instrument, but may be done manually using a microscope and a counting chamber especially when counts are very low, or the person has a condition known to interfere with an automated WBC count.
White blood cells are identified by their size, the shape and texture of the nuclear chromatin, cytoplasmic and nuclear staining, and the presence and color of granules in the cytoplasm.
www.healthline.com /galecontent/white-blood-cell-count-and-differential-2   (1129 words)

  
 White blood cell count - Complete Blood Count
White blood cells, or leukocytes, are classified into two main groups: granulocytes and nongranulocytes (also known as agranulocytes).
The lifespan of white blood cells ranges from 13 to 20 days, after which time they are destroyed in the lymphatic system.
Leukocytosis, a WBC above 10,000, is usually due to an increase in one of the five types of white blood cells and is given the name of the cell that shows the primary increase.
www.rnceus.com /cbc/cbcwbc.html   (817 words)

  
 OzDASL: Red Blood Cell Count in Cows   (Site not responding. Last check: 2007-09-15)
The problem to be considered here concerns a way of quantifying the change in red blood cell populations during the recovery stages of the disease.
In a laboratory trial, cows were inoculated with the parasite and their red blood cells monitored before and after inoculation.
A cursory inspection of the two sets of observed frequency counts in histogram form on the logarithmic scale suggest that the red blood cell volume distribution is bimodal, at least at 21 days after inoculation.
www.statsci.org /data/oz/rbcmix.html   (295 words)

  
 White blood cell count   (Site not responding. Last check: 2007-09-15)
The blood may be collected in a pipette (small glass tube), on a slide, onto a test strip, or into a small container.
There are various types of white blood cells (WBCs) that normally appear in the blood: neutrophils (polymorphonuclear leukocytes; PMNs), band cells (slightly immature neutrophils), T-type lymphocytes (T cells), B-type lymphocytes (B cells), monocytes, eosinophils, and basophils.
This usually entails increased numbers of cells and an increase in the percentage of immature cells (mainly band zcells) in the blood.
www.shands.org /health/surgeries/100151.html   (741 words)

  
 Blood Count | AHealthyMe.com
Because platelets can clump together, the automated counting method is subject to a certain level of error and may not be accurate enough for low platelet counts.
The normal number of white blood cells for both men and women is approximately 4,000-10,000 WBCs per microliter of blood.
Abnormal blood count results are seen in a variety of conditions.
www.ahealthyme.com /topic/topic100586525   (958 words)

  
 Red blood cell count - Complete Blood Count
The primary function of the red blood cells, or erythrocytes, is to carry oxygen from the lungs to body tissues and to transfer carbon dioxide from the tissues to the lungs.
Red blood cells are also able to change shape to permit passage through small capillaries that connect arteries with veins.
Normal ranges for reticulocytes are 0.5% to 1.5% of the total numbers of red blood cells in men and 0.5% to 2.5% in women.
www.rnceus.com /cbc/cbcrbc.html   (649 words)

  
 COMPLETE BLOOD COUNT (CBC)
All blood cells are made in the bone marrow, the center of large bones.
Red blood cells carry oxygen from the lungs to cells throughout the body.
Hemoglobin (HGB) is a protein in red blood cells that actually carries oxygen from the lungs to the rest of the body.
www.aids.org /factSheets/121-Complete-Blood-Count-CBC.html   (901 words)

  
 Low Blood Count - White Cell, Red Cell, Platelet Blood Counts
Blood cells; red blood cells, white blood cells and platelets are made by the bone marrow.
If a person with low blood count is exposed to another person with an infectious disease (sexual contact or intimate contact) consult the physician as soon as possible for possible preventative medication.
Foods and beverages that are generally safe for those with low white blood cell count include steaming-hot foods, fruits that are peeled by the traveler, bottled (especially carbonated) beverages, hot coffee and tea, beer, wine, and water brought to a rolling boil for 1 minute.
www.chemocare.com /managing/low_blood_counts.asp   (2948 words)

  
 White Blood Cell Count (WBC)   (Site not responding. Last check: 2007-09-15)
White cell count (WBC) is the total number of leukocytes in a volume of blood, expressed as thousands/µl.
If nucleated red cells are circulating in blood, they will be included in the nucleated cell count whether the count is done by manual methods or by automated analyzers.
A hemocytometer is charged with the diluted blood, and nuclei are counted in the appropriate areas of the grid using a light microscope.
www.diaglab.vet.cornell.edu /clinpath/modules/hemogram/wbc.htm   (538 words)

  
 Red Blood Cell Count   (Site not responding. Last check: 2007-09-15)
The red blood cell count on the routine CBC is the concentration of red cells, expressed in millions / µL of whole blood.
Automated counts are most commonly performed using "impedance counters" such as the Coulter Z2®, which we use for performing cell counts in body fluids.
Each cell causes a change in electrical resistance as it passes the aperture, and this pulse is detected and amplified by the instrument.
www.diaglab.vet.cornell.edu /clinpath/modules/hemogram/rbc.htm   (337 words)

  
 Red Cell Indices
Using the results of the red blood cell (RBC) count, hematocrit, and total hemoglobin tests, red cell indices (erythrocyte indices) provide important information about the size, hemoglobin concentration, and hemoglobin weight of an average RBC.
MCV, the ratio of hematocrit (packed cell volume) to the RBC count, ex­presses the average size of the erythrocytes and indicates whether they are undersized (microcytic), oversized (macrocytic), or normal (normocytic).
High white blood cell count (false­high RBC count in semiautomated and automated counters, invalidating MCV and MCHC results).
www.diagnostic-medical-tests.com /hematology-coagulation-tests/red-cell-indices.htm   (437 words)

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