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Updated: Aug 13, 2026

Derivation of Human Embryonic Stem Cells by Immunosurgery
Published on: December 13, 2007
Derivation of human embryonic stem cells in defined conditions
Tenneille E Ludwig1, Mark E Levenstein, Jeffrey M Jones
1WiCell Research Institute, PO Box 7365, Madison, Wisconsin 53707-7365, USA.
Abstract:
We have previously reported that high concentrations of basic fibroblast growth factor (bFGF) support feeder-independent growth of human embryonic stem (ES) cells, but those conditions included poorly defined serum and matrix components. Here we report feeder-independent human ES cell culture that includes protein components solely derived from recombinant sources or purified from human material. We describe the derivation of two new human ES cell lines in these defined culture conditions.
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