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Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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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.

Microtubules: EM of cilia cross section Microtubules: EM of cilia cross section
Internal and External Loci of Control Internal and External Loci of Control
Internal rotation of the shoulders Internal rotation of the shoulders
Internal Anatomy of the Spinal Cord Internal Anatomy of the Spinal Cord
Yearly growth of tree trunk (cross-section) Yearly growth of tree trunk (cross-section)
Breeding garden pea plants (Pisum sativum), which can self-fertilize or cross-fertilize. Breeding garden pea plants (Pisum sativum), which can self-fertilize or cross-fertilize.
Video: Amniocentesis and CVS Animation

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