A macroencapsulation device for somatic cells using ultrapurified Na alginate and polysulfone hollow fibers of 30 kDa molecular weight cutoff. Ultrapurified Na alginate material is used which has a high `G` content, low endotoxin content, low divalent metal toxins and low protein impurities. Islet cells...http://www.google.fr/patents/US5976780?utm_source=gb-gplus-shareBrevet US5976780 - Encapsulated cell device
