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  2. Challenge coin - Wikipedia

    en.wikipedia.org/wiki/Challenge_coin

    The front of a U.S. Marine Corps birthday ball medallion Huguenot méreau used as a challenge coin during 17th century Protestant persecution in France. A challenge coin is a small coin or medallion, bearing an organization's insignia or emblem and carried by the organization's members. Traditionally, they might be given to prove membership ...

  3. Galactomannan - Wikipedia

    en.wikipedia.org/wiki/Galactomannan

    A segment of galactomannan showing mannose backbone (below) with a branching galactose unit (top) Galactomannans are polysaccharides consisting of a mannose backbone with galactose side groups, more specifically, a (1-4)-linked beta-D-mannopyranose backbone with branchpoints from their 6-positions linked to alpha-D-galactose, (i.e. 1-6-linked alpha-D-galactopyranose).

  4. Galactose-α-1,3-galactose - Wikipedia

    en.wikipedia.org/wiki/Galactose-α-1,3-galactose

    Galactose-α-1,3-galactose, commonly known as alpha gal and the Galili antigen, is a carbohydrate found in most mammalian cell membranes. It is not found in catarrhines , [ 1 ] including humans, who have lost the glycoprotein alpha-1,3-galactosyltransferase ( GGTA1 ) gene.

  5. 9 Rare American Coins That Are Worth a Lot of Money - AOL

    www.aol.com/9-rare-american-coins-worth...

    The Standing Liberty quarter remains “among the most collectible old coins ever made” by the U.S. Mint, according to Gainesville Coins. The coin’s design made its debut in 1916 but was ...

  6. List of most expensive coins - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive_coins

    Nine Leaves BD-3 $10 United States Auction '89 Sotheby's/Stack's Bowers: September 2015 $1,057,500 1852 Humber $10 K-10 Territorial United States Augustus Humbert Heritage Auctions: April 2013 $1,057,500 1795 BB-51 Draped Bust Silver Dollar United States Garrett Sotheby's/Stack's Bowers: May 2016 $1,057,500 1792 Disme J-11 Pattern United States

  7. These 12 Coins May Be Extinct, but They Are Worth ... - AOL

    www.aol.com/finance/12-extinct-us-coins-worth...

    $10 gold: 1795-1933 $20 gold: 1849-1933 Depending on the condition, you might get anywhere from less than $100 to more than $2 million for some of the coins on the above list.

  8. GLA (gene) - Wikipedia

    en.wikipedia.org/wiki/GLA_(gene)

    This galactose molecule is called the H antigen. [28] [29] [30] Blood type A, B, AB, and O differ only in the sugar (red molecule in the illustration) linked with the penultimate galactose. For blood type B, this linked sugar is an α-1‐3‐linked galactose. Using α-GAL, this terminal galactose molecule can be removed, converting RBC to type O.

  9. US Presidential Dollar Coins Worth the Most Money — You Could ...

    www.aol.com/us-presidential-dollar-coins-worth...

    10 Genius Things Warren Buffett Says To Do With Your Money. This article originally appeared on GOBankingRates.com: US Presidential Dollar Coins Worth the Most Money — You Could Score up to $141,000