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 * Guernsey: An island of southern Great Britain, one of the Channel Islands in the English Channel off the coast of northwest France.
 * Gamma globulin: A protein fraction of blood serum containing many antibodies that protect against bacterial and viral infectious diseases.
 * Girl Guides: A British organization of young women and girls founded in 1910.
 * Google Groups: A service from Google that supports group formation based on common interests.
 * Grenadier Guards: Members of the senior regiment of infantry in the Household Brigade in the British Army.