Nanocapsules

**Definition:** Nanometer-sized, hollow, spherically-shaped objects that can be utilized to encapsulate small amounts of pharmaceuticals, enzymes, or other catalysts (Glossary of Biotechnology and Nanobiotechnology, 4th ed).

**Tree numbers:** - D26.255.260.575 - E02.319.300.380.575 - J01.637.512.600.575