Development

Seventeen Cell Lines

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Science  19 Mar 2004:
Vol. 303, Issue 5665, pp. 1731-1733
DOI: 10.1126/science.303.5665.1731d

Embryonic stem cells hold promise both for the study of early development and as a source of differentiated cell types that may be used in cellular therapies for human diseases. Yet human embryonic stem cells are not widely available. Now, Cowan et al. have increased the number of human embryonic stem cell lines by 17. Although not approved for research supported by National Institutes of Health funding, these cell lines are available for noncommercial research purposes. Each of them, derived from donated embryos, requires a feeder layer of mouse fibroblasts and has been developed to respond to standardized cell culture techniques. — PJH

N. Engl. J. Med. 10.1056/NEJMsr040330 (2004).

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