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Arachaebacteria have been recently placed in evolution as a separate kingdom of organisms between procaryotes and eucaryotes. Although these organisms contain both glycolipids and glycoproteins, they(More)
Human placental fibronectin was isolated from fresh term placenta by urea extraction and purified by gelatin affinity chromatography. A 44-kDa chymotryptic fragment, also purified by gelatin affinity(More)