The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
The evolution of orthologs: homologous genes from different species.
Marginal Products of Physical and Human Capital
Human Anatomy
A wide variety of pathogens may live on or in the human body.