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Delivery of biologically active molecules using cells contained in biocompatible immunoisolatory capsules

  • US 5,639,275 A
  • Filed: 05/25/1995
  • Issued: 06/17/1997
  • Est. Priority Date: 08/12/1993
  • Status: Expired due to Term
First Claim
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1. A capsule comprising a semipermeable membrane, the membrane comprising an inner wall surface that is permselective, an outer non-permselective wall surface, and a trabecular wall therebetween, the outer wall surface containing macropores, the macropores comprising between about 2.0-20% of the total area of the outer wall surface, and ranging from about 5-15 μ

  • m in diameter.

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