A small, beaded material, derived from silica, glass, dextran or similar materials, used for the immobilization of biocatalysts or as a support for the culture of anchorage-dependent animal cell lines.
Source:
PAC, 1992, 64, 143. 'Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)' on page 160 (https://doi.org/10.1351/pac199264010143)