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Biotech / Medical : Geron Corp.

GERN 1.180

-0.8%

Nov 28 9:30 AM EST

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To: tom pope who wrote (2809)	1/26/2005 2:32:58 PM
From: nigel bates	Read Replies (1) of 3576

Haven't seen anything similar from GERN or STEM. I wonder why. STEM seem to believe a response in the faq section of their website is sufficient.... Comment from Martin McGlynn, President and CEO of StemCells, Inc. on Media Reports Regarding Contaminated Stem Cells A study published in Nature Medicine in its January 24, 2005 online edition reports that human embryonic stem cells approved for use under federally funded research are contaminated with an animal molecule and are potentially unsafe to use in human medical research. This study concerns embryonic stem cells that are cultured using animal based serum, and refers specifically to an embryonic stem cell line that was grown on mouse feeder cells using animal based serum replacement products. StemCells Inc. does not use embryonic stem cells; our cells are derived from already-formed human organs. We do not use mouse feeder cells in any way in preparing our stem cells. In fact, all cells prepared by StemCells, Inc. are grown in serum-free media and do not come into contact with cells from animals. Differences between cells used by StemCells, Inc. and those discussed in the Nature Medicine study or those used by other companies investigating stem cell biology include: -- StemCells, Inc. uses human tissue-derived stem and progenitor cells for transplantation and NOT embryonic stem cells. Tissue derived stem cells have already taken the first steps along the developmental path that will turn them into mature cells of that organ. -- Our cell expansion process does not use any feeder cells. -- Our stem cells are grown in serum-free media. Our cells do not come into contact with cells from animals. Thank you for your continued interest in StemCells, Inc. Martin McGlynn, President and CEO

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