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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.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Chuckwalla body lengths at the end of a laboratory rearing experiment Chuckwalla body lengths at the end of a laboratory rearing experiment
Goblet cells that line the intestine Goblet cells that line the intestine
The Meselson-Stahl Experiment The Meselson-Stahl Experiment
Uranus's aurorae against its equatorial rings, imaged by the Hubble telescope. Unlike the auror Uranus's aurorae against its equatorial rings, imaged by the Hubble telescope. Unlike the auror
Number line (5 - 1) Number line (5 - 1)
The Hershey-Chase experiment The Hershey-Chase experiment
Video: Structure of a Ribosome

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