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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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.
There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).
![The term wasp is typically defined as any insect of the order Hymenoptera and suborder Apocrita that](https://biology-forums.com/gallery/47/medium_12359_29_04_12_6_05_04.jpeg)
![The Kingsley plantation, on Fort George Island in Jacksonville, Florida. Zephaniah Kingsley, the own](https://biology-forums.com/gallery/47/medium_375552_19_08_15_9_09_52_223231620.jpeg)