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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

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Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Water Gradient Water Gradient
Some of the many small molecules found in cells Some of the many small molecules found in cells
A typical eye wash station. A thorough flushing of the eyes with water is the first and often the ... A typical eye wash station. A thorough flushing of the eyes with water is the first and often the ...
The arrangement of water molecules in (a) solid ice, and (b) liquid water. The arrangement of water molecules in (a) solid ice, and (b) liquid water.
Variable Gases: Water Vapor Variable Gases: Water Vapor
Two Zebras Drinking Water Two Zebras Drinking Water
Video: Bone Healing Animation

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