The X Factor (UK series 8) The X Factor (UK series 8) "The X Factor" is a British television music competition to find new singing talent. The eighth series commenced airing on ITV on 20 August 2011 and ended on 11 December 2011. The winner was Little Mix, a four-piece girl group known earlier in the series as Rhythmix, consisting of members Jesy Nelson, Perrie Edwards, Leigh-Anne Pinnock, and Jade Thirlwall. They became the first act in the groups category to win in the UK show's history with new judge Tulisa emerging as their winning mentor. Dermot O'Leary presented the main show on ITV, while Caroline
Factor X Miss Audrey Prower (1934). Factor X has been shown to interact with Tissue factor pathway inhibitor. Factor X Factor X, also known by the eponym Stuart–Prower factor, is an enzyme () of the coagulation cascade. It is a serine endopeptidase (protease group S1, PA clan). Factor X is synthesized in the liver and requires vitamin K for its synthesis. Factor X is activated, by hydrolysis, into factor Xa by both factor IX (with its cofactor, factor VIII in a complex known as "intrinsic Xase") and factor VII with its cofactor, tissue factor (a complex known as "extrinsic Xase"). It is