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Did you know?
The longest a person has survived after a heart transplant is 24 years.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Did you know?
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
![Polyps and polyposis. A polyp is a protruding growth from a mucous membrane lining a hollow organ. I](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_23_54_9689598.jpeg)
![Leukemia. A blood smear from a patient suffering from leukemia demonstrates the abundance of enlarge](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_18_46_100411265.jpeg)