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Look up XIII in Wiktionary, the free dictionary. XIII may refer to: 13 (number) or XIII in Roman numerals, XIII (comics), a Belgian comic book series by Jean Van Hamme and William Vance, XIII (video game), a 2003 video game based on the comic book series, XIII (miniseries), a TV miniseries based on the comic book series and game of the same title, XIII: The Series, a 2011 TV series based on the comic book series and miniseries, XIII (Rage album), 1998, XIII (Mushroomhead album), 2003, Factor XIII, a clotting factor inside the coagulation cascade

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