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Did you know?
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
Did you know?
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Did you know?
There are more sensory neurons in the tongue than in any other part of the body.

