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Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

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The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

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The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Split thorn of a bullshorn acacia, revealing a nest of its ant mutualists. Split thorn of a bullshorn acacia, revealing a nest of its ant mutualists.
DNA molecules replicate to form identical chromatids DNA molecules replicate to form identical chromatids
Skull Lateral View Labeled Skull Lateral View Labeled
This photo captures an extreme form of family socialization. The father seems to be more emotionally ... This photo captures an extreme form of family socialization. The father seems to be more emotionally ...
Figure of a Woman with a Drawing Showing Evidence of Original Painting and Outlining Design Scheme Figure of a Woman with a Drawing Showing Evidence of Original Painting and Outlining Design Scheme
Anterosuperior view of true pelvis (blue) Anterosuperior view of true pelvis (blue)
Video: Monohybrid crosses

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