Web16 de mar. de 2024 · Vitamins are usually designated by selected letters of the alphabet, as in vitamin D or vitamin C, though they are also designated by chemical names, such as niacin and folic acid. Biochemists … Web1 de abr. de 1997 · During the 1930s interest in vitamins grew, and chemical methods were sought to replace the very slow and laborious assays involving animals. When the …
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