A spherical shell that is usually made of a biodegradable or resorbable plastic polymer, that has a very small diameter usually in the micrometer or nanometer range, and that is often filled with a substance (as a drug or antibody) for release as the shell is degraded.
A spherical shell that is usually made of a biodegradable or resorbable plastic polymer, that has a very small diameter usually in the micrometer or nanometer range, and that is often filled with a substance (as a drug or antibody) for release as the shell is degraded...
Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..
Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..
Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..
This tutorial deals with the structure and function of flowers, fruits, and seeds. Also included here are the types of f..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..
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