Did you know?
It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
Did you know?
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Did you know?
As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.
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Illicit drug use costs the United States approximately $181 billion every year.
Types of cell adhesion molecules (CAMs)
Humpbacks frequently breach, throwing two thirds or more of their bodies out of the water and splash
A Human Cell
A typical eukaryotic cell.
Phases of the Cell Cycle
Assembly of a к light-chain gene in a B cell