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  1. They have a protein on the B cell's outer surface known as a 'B cell receptor'. This allows a B cell to bind to a specific antigen. The main functions of B cells are: to make antibodies against antigens, to perform the role of antigen-presenting cells (APCs),

  2. Fabaceae is the systematic name of the plant family that is commonly known as the Pea family. It consists of three subgroups: Caesalpinioideae, Mimosoideae and Papilionoideae (or better Faboideae). In modern systems like APG II this family Fabaceae is closely related to Quillajaceae, Polygalaceae or milkworts (including the families ...

  3. Wikipedia is an encyclopedia that is written by many of its readers. It is a special type of website called a wiki, that makes working together easy. Many people are always improving Wikipedia, making many changes every day. You can see what changes people make on the page histories of articles and the new changes pages.

  4. Free radical. A free radical is a molecule with an unpaired electron. The molecule is reactive and seeks another electron to pair. [1] Free radicals are involved in the mechanisms of damage associated with disease development. Examples are hydrogen peroxide, hypochlorite, nitric oxide and nitrogen dioxide.

  5. In the SI, g is the symbol for the gram. G is a unit of gravitational acceleration. Alternative case form of G grand: means thousand. Letter G stands for GPRS (General Packet Radio Service). It indicates the slowest speed of Internet data transfer in your mobile phone. When you see G near your signal strength indicator, it is certain that your ...

  6. Actinide. The actinide series is the 15 chemical elements between actinium and lawrencium on the periodic table. They have the atomic numbers between 89 and 103. The actinide series is named after actinium. All of the elements are radioactive. Uranium is the most common natural actinide, and thorium second. [1]

  7. Quinine [1] is an alkaloid which can reduce fever, work against malaria, pain and swelling. The bark of the Cinchona family of trees contains quinine. Quinine can be made artificially, but this is more expensive than extracting it from the bark of the tree. This tree is found in the Andes, South America, Indonesia, and Congo.

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