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Updated: Feb 5, 2026

A Microfluidic Chip for ICPMS Sample Introduction
Published on: March 5, 2015
Introduction: An Overview
Gregory S Keller1, Andrea M Park1
1Division of Facial Plastic Surgery, Department of Head and Neck Surgery, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA.
Abstract:
The use of biologicals for clinical use is rapidly increasing. One of the logical questions is what constitutes a biological? The official definition of biological products by the Food and Drug Administration is "Biological products can be composed of sugars, proteins, or nucleic acids, or a combination of these substances. They may also be living entities, such as cells and tissues. Biologics are made from a variety of natural resources-human, animal, and microorganism-and may be produced by biotechnology methods."
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