vitamin

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Natural vs. synthetic vitamins: Is there a difference?

vitamin deficiency

B-vitamin coenzymes in metabolism

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vitamin summary

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The Battle of New Orleans, by E. Percy Moran, c. 1910. Andrew Jackson, War of 1812.

26 Decade-Defining Events in U.S. History

Aspirin pills.

7 Drugs that Changed the World

Close up of praying mantis walking on stone ground against a blurred background in Japan

6 Animals That Eat Their Mates

Illustration for Demystified "How Dangerous is Quicksand"

How Deadly Is Quicksand?

Berries and leaves of the bittersweet nightshade (Solanum dulcamara) plant. Poisonous plant

7 of the World’s Deadliest Plants

Aurochs. Bos primigenius. Skeleton. Extinct animal. Skeleton of an Aurochs, an extinct wild ox.

6 Animals We Ate Into Extinction

Amendments 1-10 to the Constitution of the United States constitute what is known as the Bill of Rights on an American flag.

What Is the Emoluments Clause?

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vitamin deficiency

B-vitamin coenzymes in metabolism

Natural vs. synthetic vitamins: Is there a difference?

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vitamin D vitamin A vitamin K vitamin E vitamin C choline vitamin B complex para-aminobenzoic acid carnitine human nutrition protein hormone lipid carboxylic acid hydrocarbon heterocyclic compound organosulfur compound nucleic acid carbohydrate steroid

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Key People

Frederick Gowland Hopkins

Sir Frederick Gowland Hopkins

British biochemist

Richard Kuhn

German scientist

Mendel, Lafayette Benedict

Lafayette Benedict Mendel

American biochemist

Joshua Harold Burn

British pharmacologist