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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

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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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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Multiple sclerosis (MS). (a) A disease characterized by the gradual development of small areas of ha Multiple sclerosis (MS). (a) A disease characterized by the gradual development of small areas of ha
Dove's Foot Cranesbill Dove's Foot Cranesbill
Blood types and results of donor and recipient combinations. Blood types and results of donor and recipient combinations.
Apply thumb strokes on foot bottom and toes. Hold the baby’s foot bottom-up and use thumbs to ... Apply thumb strokes on foot bottom and toes. Hold the baby’s foot bottom-up and use thumbs to ...
BLAST results showing a 280-base sequence of a chromosome 12 contig from rats BLAST results showing a 280-base sequence of a chromosome 12 contig from rats
The effects of a single crossover in a paracentric inversion heterozygote The effects of a single crossover in a paracentric inversion heterozygote
Video: Ear Animation

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