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Vitamin K2

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Scientific name: Menaquinones

Substance/source: Vitamin K active substances synthesised by microorganisms and produced from other vitamins by animals

Physiological role: Coenzymes in blood clotting


  1. McKee R, Binkley S, MacCorquodale D et al. The isolation of vitamins K1 and K2. J Am Chem Soc 1939; 61: 1295.
  2. Combs Jr. G.F., 2012, “The Vitamins - Fundamental Aspects in Nutrition and Health - 3rd edition,” Academic Press; p. 517.
  3. Williams P., 2015, “The missing vitamin alphabet,” Nutrition & Dietetics [Web Reference]
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