Word: ergosterol
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Dates: during 1920-1929
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Vitamin D made by irradiating ergosterol...
...Ergosterol and adrenalin found in fluid secreted by toads...
...toad, one of the most ancient forms of present animals, one that lives both in water and on land, apparently secretes a fluid whose components are both animal and vegetable. One ingredient is ergosterol, which is found in cod liver oil. Another is adrenalin exactly like that taken from the suprarenal glands of animals. Two other ingredients act like digitalis, which the purple foxglove produces. There is a reservation in the scientists' report. They do not know how the Chinese dry and prepare their toad venom. Strange things may be added, befogging a true analysis...
...Liver Oil & Ergosterol. In cod-liver oil, is a substance which contains Vitamin D and which helps both to prevent and cure rickets (bone disease). That substance (provitamin) acts like a solid alcohol (sterol) and is believed to be ergosterol. If ergosterol is exposed to certain wave lengths of ultraviolet light for certain periods the potency of this provitamin is increased so powerfully that, for treating rickets, one ounce of it is as good as six tons of cod-liver oil.-Dr. Alfred Fabian Hess of Manhattan...