LACCA
\lˈakə], \lˈakə], \l_ˈa_k_ə]\
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Lac is a substance formed by an insect, and deposited on different species of trees, chiefly in the East Indies, for example, on Croton lacciferum, and two species of Ficus,-Ficus religiosa, and F. Indica. The various kinds, distinguished in commerce, are stick-lac, which is the substance in its natural state, investing the small twigs of the tree: and seed-lac, which is the same broken off. When melted, it is called shell-lac. Lac was, at one time, used in the form of tincture, as a tonic and astringent; and it still forms part of particular dentifrices.
By Robley Dunglison
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.