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Did you know?

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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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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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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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Parallel Light Rays from Distant Objects Parallel Light Rays from Distant Objects
When both sides of the back have been massaged, redrape the back. With light to moderate force, use ... When both sides of the back have been massaged, redrape the back. With light to moderate force, use ...
Use full palms to apply light sliding strokes from foot to hip. This connects and finishes massage ... Use full palms to apply light sliding strokes from foot to hip. This connects and finishes massage ...
Peptide Arrays - light-directed, spatially patterned oligopeptide synthesis Peptide Arrays - light-directed, spatially patterned oligopeptide synthesis
Light energy from the Sun powers Light energy from the Sun powers
Energy passes among trophic levels Energy passes among trophic levels
Video: Introduction to Sickle Cell Anemia

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