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Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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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).

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

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The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

An electron micrograph from an experiment demonstrating the function of a tight junction An electron micrograph from an experiment demonstrating the function of a tight junction
The Movius line separates regions of the world where Acheulean hand axes were made from regions wher The Movius line separates regions of the world where Acheulean hand axes were made from regions wher
An Example of an Electrical Stimulation Experiment An Example of an Electrical Stimulation Experiment
The line with the equation y=5x+12 intersects the parabola with equation y=xsqared+7x-3 at the ... The line with the equation y=5x+12 intersects the parabola with equation y=xsqared+7x-3 at the ...
Waiting in line for a photocopier Waiting in line for a photocopier
Number line (5 - 1) Number line (5 - 1)
Video: Molecules, Membrane Permeability and Structure

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