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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There are approximately 3 million unintended pregnancies in the United States each year.
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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.
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The longest a person has survived after a heart transplant is 24 years.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
The family tree of HIV and related viruses
Selected Drugs for Psoriasis and Related Disorders
Procedures and Diagnostic Tests Related to the Endocrine System
Participating in religious services is related to better coping skills, less severe stress ...
The salivary glands and related structures of the oral cavity.
Dental Related Adverse Effects in Patients Undergoing Cancer Treatment