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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
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.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.
![Aristolochic acid (AA), a component of birthwort,a plant used in herbal remedies since ancient times](https://biology-forums.com/gallery/47/medium_12359_10_04_12_12_20_40.jpeg)
![Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i](https://biology-forums.com/gallery/47/medium_14755_16_10_12_12_29_16_94431165.jpeg)