|
|
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
The average office desk has 400 times more bacteria on it than a toilet.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
![An orange-red biohazard symbol indicates that bloodborne pathogens may be present, and items should ...](https://biology-forums.com/gallery/47/medium_665046_09_03_17_10_53_08_267831121.jpeg)
![High rates of rural poverty have been a part of the United States from its origin to the present. ...](https://biology-forums.com/gallery/27/medium_660366_13_04_17_9_02_39_277402354.png)