The human body produces and destroys 15 million blood cells every second.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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The horizontal fraction bar was introduced by the Arabs.
Old Time Farm Shepherd
Apparent and True Orbits of Alpha Centauri.
Which of the following statements is true of linkage?
Time course for antibodies to the EBV viral–specific antigens.