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The immunogenic effect of purified antigens of B. alexandrina against S. mansoni in experimental animals (II) as measured by the histopathological changes in the liver.
J Egypt Soc Parasitol
April 1997
Department of Parasitology, Faculty of Medicine, Al Azhar University, Cairo, Egypt.
It can be safely said that up till now, no method of vaccination (including recent genes encoding vaccines) has yet proved to be totally effective since they gave partial and low levels of protection against S. mansoni infection. The objective of this work is to try testing the immunogenic effect of two purified non infected B.
View Article and Find Full Text PDFIdentification of insulin-like growth factor-binding protein-3 (IGFBP-3) and IGFBP-2 in human follicular fluid.
J Clin Endocrinol Metab
November 1990
Department of Gynecology and Obstetrics, Stanford University Medical Center, California 94305.
Two major insulin-like growth factor-binding proteins, IGFBP-2 and IGFBP-3, were identified by Western ligand blotting of human follicular fluid (FF) aspirated from luteinizing follicles during ovarian stimulation with human menopausal gonadotropin (LH and FSH). IGFBP-1 was also present in FF, and an IGFBP with a mol wt of 24000 daltons, present in serum, appeared to be absent in FF. Identification of IGFBP-1, IGFBP-2, and IGFBP-3 was confirmed using IGFBP-specific antisera.
View Article and Find Full Text PDFIsolation and characterization of thiosulfate reductases from the green alga Chlorella fusca.
Planta
September 1984
Botanisches Institut der Universität, Menzinger Strasse 67, D-8000, München 19, Germany.
Thiosulfate-reductase activity (TSR) measured as sulfide release from thiosulfate was detected in crude extracts of Chlorella using dithioerythritol (DTE) as electron donor. Purification of this activity by ammonium-sulfate precipitation between 35% and 80% followed by Sephadex G-50 gel filtration, diethylaminoethyl-cellulose chromatography, and gel filtration on Biogel A 1.5 M led to four distinct proteins having molecular weights of: TSR I, 28000; TSR II, 26500; TSR IIIa, 55000; TSR IIIb, 24000 daltons.
View Article and Find Full Text PDFSubunit II (with a molecular mass of about 24000 dalton, approximately 24 kDA) of NADH dehydrogenase from beef heart mitochondria was [ 14C ]carboxymethylated and cleaved with CNBr and proteolytic enzymes. Sequence analyses of purified fragments suggest that the subunit is composed of a homogeneous polypeptide chain, containing just over 230 residues. The primary structure of this chain was established except for a 14-residue internal part which was only determined by composition.
View Article and Find Full Text PDFTwo distinct endonucleases from Saccharomyces cerevisiae, specific for apurinic/apyrimidinic sites (AP-endonucleases A and B), have been extensively purified and characterized. Both are free from unspecific and ultraviolet-specific endonucleases and exonucleases. The two enzymes are monomeric proteins of around 24000 daltons.
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