Category: B
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Blue litmus
Treated paper which indicates the presence of acid by turning red.
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Blood typing
The analysis of blood for transfusion factors and blood group. Technique for determining a person’s blood type or group. In typing for the commonly used ABO blood group system, blood cells are matched with serum known to be type A or type B, and whether or not agglutination (clumping) of the cells occurs determines the…
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Blood transfusion
A procedure in which blood given by another person or taken from the patient at an earlier stage is transferred into the patient’s vein. The introduction of large quantities of blood or blood components (such as red blood cells) into a patient’s body to replace blood lost or weakened through injury, surgery, or disease. Blood…
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Blood sugar level
The amount of glucose in the blood, which is higher after meals and in people with diabetes.
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Bloodstream
The blood flowing round the body. The blood that flows through the circulatory system of an organism.
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Bloodstained
Having blood in or on it.
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Bloodshot
Referring to an eye with small specks of blood in it from a small damaged blood vessel. Local congestion of the smaller blood vessels of a part, as when the vessels of the conjunctiva are dilated and visible.
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Blood sample
A sample of blood, taken for testing.
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Blood relationship
A relationship between people who come from the same family and have the same parents, grandparents or ancestors, as opposed to a relationship by marriage. People who share some close genetic inheritance and therefore have an increased risk of passing on various traits, including genetic disorders. Blood relatives are said to be consanguineous. When someone…
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Blood product
A substance such as plasma taken out of blood and used in the treatment of various medical conditions. The forms in which blood donations are stored before a transfusion. Blood products include whole blood and various blood components, each of which is used for different purposes. Donated blood undergoes a process of separation into its…