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Medicinal uses of the rose: Long ago rose petals were used to control bleeding because they contain an astringent called tannin.
Apple blossom garnish:The internet advises that apple blossoms are nice to use to garnish fruit dishes but they should only be eaten in moderation because they may contain cyanide precursors. Blue roses soon: Scientists experimenting with liver enzymes stumbled across a method that might be used to produce blue roses in the near future.
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