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Primate embryonic stem cells

  • US 6,200,806 B1
  • Filed: 06/26/1998
  • Issued: 03/13/2001
  • Est. Priority Date: 01/20/1995
  • Status: Expired due to Term
First Claim
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1. A purified preparation of pluripotent human embryonic stem cells which (i) will proliferate in an in vitro culture for over one year, (ii) maintains a karyotype in which the chromosomes are euploid and not altered through prolonged culture, (iii) maintains the potential to differentiate to derivatives of endoderm, mesoderm, and ectoderm tissues throughout the culture, and (iv) is inhibited from differentiation when cultured on a fibroblast feeder layer.

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