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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
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.
As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
There are more nerve cells in one human brain than there are stars in the Milky Way.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
![Sequential blending uses a computer to calculate the correct ratio as well as the prescribed order ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_1_36_24_293761060.png)
![Each of the eight injectors shown are producing a correct spray pattern for the applications. While ...](https://biology-forums.com/gallery/30/medium_548020_30_05_17_11_26_28_3001172.png)