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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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
Acromegaly. Photo of a woman illustrating the enlarged skull, jaw, and hands typical of acromegaly.
A Pokot married woman, Kenya.
Pregnant woman taking precautions to prevent a toxoplasmosis infection by (a) having someone else ...
African Woman
A partial pedigree of a woman with the Bombay phenotype