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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

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Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Unique communities may result from distinct environmental conditions. Unique communities may result from distinct environmental conditions.
A melanistic jaguar at the Henry Doorly Zoo. Melanism is the result of a dominant allele and remains A melanistic jaguar at the Henry Doorly Zoo. Melanism is the result of a dominant allele and remains
Predicted versus Actual GDP per Worker Predicted versus Actual GDP per Worker
Pulmonary Congestion, which May Result from Congestive Heart Failure Pulmonary Congestion, which May Result from Congestive Heart Failure
(a) Monozygotic (MZ) twins result from the fertilization of a single egg by a single sperm. After on (a) Monozygotic (MZ) twins result from the fertilization of a single egg by a single sperm. After on
result of DGUC result of DGUC
Video: PET Scan Animation

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