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This involves the replacement of the cyanide moiety with either a methyl or adenosyl group to transform it into the active forms, methylcobalamin or adenosylcobalamin

Some of the best sources: 1 egg: 0.45 mcg 1 oz mozzarella: 0.65 mcg 3 oz beef tenderloin: 3.48 mcg 1 cup nonfat milk: 1.23 mcg 3 oz salmon: 2.38 mcg 3 oz tuna: 9.25 mcg 3 oz oysters: 5.75 mcg 1 cup Kashi Heart to Heart Honey Toasted Oat Cereal: 5.94 mcg 1 cup Kellogg's All-Bran Complete Wheat Flakes: 6.62 mcg 1 cup soy milk: 3 mcg 1 Tbsp Bragg Premium Nutritional Yeast Seasoning: 2.4 mcg Related: The Scary Mental Health Risks of Going Meatless "I'm a vegetarian, and I had been feeling a little shaky before I was told I wasn't getting enough B12

Similarly, key exercise-related molecules and their mimetics can partially reproduce the vascular protective effects of physical activity

Mitkevich OV, Shainoff JR, DiBello PM et al (1998) Coagulation factor XIIIa undergoes a conformational change evoked by glutamine substrate