The amber, which is formed when plantresin fossilizes, preserving flora and fauna trapped within, was found in what is now northwest Ethiopia.
Ús de natural resin en anglès
1
Shellac is the only naturalresin - or gummy substance from a tree - that requires an animal middleman for its production.
2
This balloon is covered with shellac, a Food and Drug Administration (FDA) approved naturalresin, to obtain an equally distributed tissue concentration of paclitaxel.