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==Factor II ==
 
==Factor II ==
 
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Factor II is part of the prothrombin complex.
* Factor II is part of the prothrombin complex.
+
Hypoprothrombinaemia occurs when there is a lack of the components of the prothrombin complex - factors II, VII, IX, X. This can be caused by dicoumarol and its derivatives, as found in sweet clover and warfarin, which competitively inhibit Vitamin K activity in the liver, where the factors are synthesised.
* '''Hypoprothrombinaemia'''
  −
** A depression of the components of the prothrombin complex.
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*** I.e. Factors II, VII, IX, X
  −
** May be caused by dicoumarol and its derivatives, for example sweet clover and warfarin.
  −
*** Competitively inhibits Vitamin K in the liver, where the above Factors are synthesised.
      
==Factor IV ==
 
==Factor IV ==
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