Century Dictionary and Cyclopedia
- n. A colorless, amorphous, levorotatory carbohydrate, C6H10O5, found in beet-sugar molasses. It is quantitatively converted into levulose by boiling with dilute acids, and melts at about 250° C.
“During his treatments, Colbert used a procedure called photodynamic therapy, or blue light, which uses a substance known as levulan applied topically and placed under a light to kill pre-cancer cells.”
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