Create an account
Protein made by white blood cells in response to foreign substances (antigens) in the blood.
Orange-yellow pigment found in bile. It is released from the breakdown of hemoglobin when red blood cells die.
Protein that stimulates the growth and proliferation of white blood cells (granulocytes).
White blood cell whose granules stain intensely with an acidic eosin (reddish) dye; elevated in allergic reactions.
Substance (hormone) produced by the kidney to stimulate bone marrow to produce erythrocytes.
White blood cell with numerous dark-staining granules; neutrophil, eosinophil and basophil.
White blood cell with dark granules that stain with a neutral dye; phagocyte formed in the bone marrow and the body's first line of defense against disease.
Increase in numbers of sphere-shaped red blood cells, as in a type of anemia (hemolytic anemia).
Unspecialized cell that gives rise to all forms of specialized cells in the body. Hematopoietic stem cells are found in the bone marrow and lead to the development of all types of blood cells.
Enzyme necessary for blood clotting (converts fibrinogen to fibrin in the clotting process).
Treatment with drugs to break down clots that may abnormally form in blood vessels.
Acute lymphocytic leukemia
Malignant, immature lymphocytes multiply in the blood, bone marrow, and lymphatic system.
Acute myelogenous leukemia
Malignant, immature granulocytes called myeloblasts multiply in the bone marrow and bloodstream.
Test for the presence of antibodies that coat and damage erythrocytes; Coombs test.
Failure of blood cell production due to aplasia (absence of formation) of bone marrow cells.
Bone marrow biopsy
Needle aspiration of a small amount of bone marrow followed by examination under a microscope.
Chronic lymphocytic leukemia
Malignant, but relatively mature lymphocytes, multiply in bone marrow, lymph nodes, and spleen.
Chronic myelogenous leukemia
Malignant, but relatively mature granulocytic leukocytes multiply in the bloodstream.
Complete blood count
Determination of the number of red and white blood cells, platelets, hemoglobin, hematocrit, and red cell indices (MCH, MCV, MCHC) in a sample of blood.
Erythrocyte sedimentation rate
Measurement of the speed at which erythrocytes settle or fall to the bottom of a test tube.
Hematopoietic stem cell transplant
Peripheral (found in the blood) stem cells from a compatible donor are administered into the vein of a recipient.
Hereditary disease of blood clotting failure with abnormal bleeding. Affected individuals are lacking a blood clotting factor (factor VIII or factor IX).
Substance normally found in gastric (stomach) juice that helps absorption of vitamin B12 into the bloodstream.
Infectious disease marked by increased numbers of leukocytes and enlarged cervical lymph nodes.
Malignant tumor of bone marrow; overproduction of immunoglobulins and destruction of bone tissue.
Partial thromboplastin time
Measurement of presence of plasma factors that act in a portion of the coagulation pathway.
Lack of mature erythrocytes caused by inability to absorb vitamin B12 into the body.
Multiple pinpoint hemorrhages and accumulation of blood under the skin caused by deficiency of clotting cells (platelets).
Red blood cell morphology
Microscopic examination of a stained blood smear to determine the shape of individual red blood cells.
Sickle cell anemia
Hereditary condition marked by abnormal sickle shape of erythrocytes and by hemolysis.
Inherited defect in the ability to produce hemoglobin, usually seen in persons of Mediterranean background.
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together