Word: cholesterol
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Dates: during 1926-1926
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Heretofore the biochemists have considered that all the vitamins are derived from plants, although it is well-known that ultraviolet light can energize cholesterol and phytosterol (cholesterol is a constituent of animal cells, phytosterol, of plant cells) to behave like Vitamin D as a rickets-preventive. It might be that the ultraviolet light actually created Vitamin D. Vitamins found in milk, cod liver oil and fresh flesh have been supposed to have come ultimately from plants that carried such vitamins...