In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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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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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.
Morphology of a lymph node
Segregation of B cells and T cells in a lymph node