The human body produces and destroys 15 million blood cells every second.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
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In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Tides on Earth
Mercury experiment
Body directional terms.
Moon Golf
The hierarchy of genes involved in establishing the segmented body plan in Drosophila