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There are more bacteria in your mouth than there are people in the world.
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.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.
Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
![Much of the dark space between stars, as seen in the sky of the image above, is due to the human eye](https://biology-forums.com/gallery/47/medium_27605_22_04_12_6_16_47.jpeg)
![Part of the Hubble Ultra-Deep Field image showing a typical section of space containing galaxies int](https://biology-forums.com/gallery/47/medium_12359_17_05_12_12_46_12.jpeg)
![The philosophical journey requires self-examination. Your responsibility as a critical thinker is to](https://biology-forums.com/gallery/47/medium_558257_07_07_16_12_28_23_2366313.jpeg)