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Volumn 54, Issue 23, 1994, Pages 6106-6114

Selective Platelet-derived Growth Factor Receptor Kinase Blockers Reverse-Transformation

Author keywords

[No Author keywords available]

Indexed keywords

6,7 DIMETHOXY 2 PHENYLQUINOXALINE; 6,7 DIMETHYL 2 PHENYLQUINOXALINE; AG 808; EPIDERMAL GROWTH FACTOR RECEPTOR; PLATELET DERIVED GROWTH FACTOR; PLATELET DERIVED GROWTH FACTOR RECEPTOR; PROTEIN TYROSINE KINASE; PROTEIN TYROSINE KINASE INHIBITOR; STEM CELL FACTOR; TYRPHOSTIN; UNCLASSIFIED DRUG;

EID: 0028091564     PISSN: 00085472     EISSN: 15387445     Source Type: Journal    
DOI: None     Document Type: Article
Times cited : (279)

References (51)
  • 1
    • 0024383718 scopus 로고
    • Platelet-derived growth factor
    • Ross, R. Platelet-derived growth factor. Lancet, 7: 1179-1182, 1989.
    • (1989) Lancet , vol.7 , pp. 1179-1182
    • Ross, R.1
  • 2
    • 0026445368 scopus 로고
    • Structural and functional studies on platelet-derived growth factor
    • Heldin, C.H. Structural and functional studies on platelet-derived growth factor. EMBO J. 77: 4251-4259, 1992.
    • (1992) EMBO J. , vol.77 , pp. 4251-4259
    • Heldin, C.H.1
  • 5
    • 0242385220 scopus 로고
    • cDNA cloning and expression of the human A-type platelet-derived growth factor (PDGF) receptor establishes structural similarity to the B-type PDGF receptor
    • Claesson-Welsh, L. Eriksson, A. Westermark, B. and Heldin, C.H. cDNA cloning and expression of the human A-type platelet-derived growth factor (PDGF) receptor establishes structural similarity to the B-type PDGF receptor. Proc. Natl. Acad. Sci. USA, 86: 4917-4921, 1989.
    • (1989) Proc. Natl. Acad. Sci. USA , vol.86 , pp. 4917-4921
    • Claesson-Welsh, L.1    Eriksson, A.2    Westermark, B.3    Heldin, C.H.4
  • 6
    • 0023774988 scopus 로고
    • Role of tyrosine kinase and membrane-spanning domains in signal transduction by platelet-derived growth factor receptor
    • Escobedo, J.A. Barr, P.J. and Williams, L.T. Role of tyrosine kinase and membrane-spanning domains in signal transduction by platelet-derived growth factor receptor. Mol. Cell. Biol. 8: 5126-5131, 1988.
    • (1988) Mol. Cell. Biol. , vol.8 , pp. 5126-5131
    • Escobedo, J.A.1    Barr, P.J.2    Williams, L.T.3
  • 7
    • 0025171791 scopus 로고
    • Mechanisms of atherosclerosis?a review
    • Ross, R. Mechanisms of atherosclerosis?a review. Adv. Nephrol. Necker Hosp. 19: 79-86, 1990.
    • (1990) Adv. Nephrol. Necker Hosp. , vol.19 , pp. 79-86
    • Ross, R.1
  • 8
    • 0027241856 scopus 로고
    • The pathogenesis of atherosclerosis: a perspective for the 1990s
    • Ross, R. The pathogenesis of atherosclerosis: a perspective for the 1990s. Nature (Lond.), 362: 801-809, 1993.
    • (1993) Nature (Lond.) , vol.362 , pp. 801-809
    • Ross, R.1
  • 9
    • 0025967143 scopus 로고
    • Pathogenesis of pulmonary fibrosis in interstitial lung disease. Alveolar macrophage PDGF(B) gene activation and up-regulation by interferon 7
    • Shaw, R.J. Benedict, S.H. Clark, R.A. and King, T.E. Pathogenesis of pulmonary fibrosis in interstitial lung disease. Alveolar macrophage PDGF(B) gene activation and up-regulation by interferon 7. Am. Rev. Respir. Dis. 143: 167-173, 1991.
    • (1991) Am. Rev. Respir. Dis. , vol.143 , pp. 167-173
    • Shaw, R.J.1    Benedict, S.H.2    Clark, R.A.3    King, T.E.4
  • 10
    • 0002255774 scopus 로고
    • Platelet-derived growth factor and proliferative glomerulonephritis
    • Gesualdo, L. Ranierei, E. Pannarale, G. Di Paolo, S. and Schena, F.P. Platelet-derived growth factor and proliferative glomerulonephritis. Kidney Int. 43 (Suppl. 39): 86-89, 1993.
    • (1993) Kidney Int. , vol.43 , pp. 86-89
    • Gesualdo, L.1    Ranierei, E.2    Pannarale, G.3    Di Paolo, S.4    Schena, F.P.5
  • 11
    • 0023853499 scopus 로고
    • Expression of platelet-derived growth factor receptors is induced on connective tissue cells during chronic synovial inflammation
    • Rubin, K. Terracio, L. Rönnstrand, L. Heldin, C.H. and Klareskog, L. Expression of platelet-derived growth factor receptors is induced on connective tissue cells during chronic synovial inflammation. Scand. J. Immunol. 27: 285-294, 1988.
    • (1988) Scand. J. Immunol. , vol.27 , pp. 285-294
    • Rubin, K.1    Terracio, L.2    Rönnstrand, L.3    Heldin, C.H.4    Klareskog, L.5
  • 14
    • 0025933703 scopus 로고
    • Platelet-derived growth factor and autocrine mechanisms of oncogenic processes
    • Heldin, C.H. and Westermark, B. Platelet-derived growth factor and autocrine mechanisms of oncogenic processes. CRC Crit. Rev. Oncog. 2: 109-124, 1991.
    • (1991) CRC Crit. Rev. Oncog. , vol.2 , pp. 109-124
    • Heldin, C.H.1    Westermark, B.2
  • 15
    • 0026670167 scopus 로고
    • Identification of a peptide antagonist for platelet-derived growth factor
    • Engström, U. Engstrom, Å. Ernlund, A. Westermark, B. and Heldin, C.H. Identification of a peptide antagonist for platelet-derived growth factor. J. Biol. Chem. 267: 16581-16587, 1992.
    • (1992) J. Biol. Chem. , vol.267 , pp. 16581-16587
    • Engström, U.1    Engstrom, Å.2    Ernlund, A.3    Westermark, B.4    Heldin, C.H.5
  • 16
    • 0027159221 scopus 로고
    • Reversion of autocrine transformation by a dominant negative platelet-derived growth factor mutant
    • Vassbotn, F.S. Andersson, M. Westermark, B. Heldin, C.H. and Östman, A. Reversion of autocrine transformation by a dominant negative platelet-derived growth factor mutant. Mol. Cell. Biol. 13: 4066-4076, 1993.
    • (1993) Mol. Cell. Biol. , vol.13 , pp. 4066-4076
    • Vassbotn, F.S.1    Andersson, M.2    Westermark, B.3    Heldin, C.H.4    Östman, A.5
  • 17
    • 0027361809 scopus 로고
    • Dominant-negative mutants of platelet-derived growth factor revert the transformed phenotype of human astrocytoma cells
    • Shaman, S.M. Stiles, C.D. and Guha, A. Dominant-negative mutants of platelet-derived growth factor revert the transformed phenotype of human astrocytoma cells. Mol. Cell. Biol. 13: 7203-7212, 1993.
    • (1993) Mol. Cell. Biol. , vol.13 , pp. 7203-7212
    • Shaman, S.M.1    Stiles, C.D.2    Guha, A.3
  • 18
    • 0025734507 scopus 로고
    • Inhibition of PDGFB receptor signal transduction by coexpression of a truncated receptor
    • Ueno, H. Colbert, H. Escobedo, J.A. and Williams, L.T. Inhibition of PDGFB receptor signal transduction by coexpression of a truncated receptor. Science (Washington DC), 252: 844-848, 1991.
    • (1991) Science (Washington DC) , vol.252 , pp. 844-848
    • Ueno, H.1    Colbert, H.2    Escobedo, J.A.3    Williams, L.T.4
  • 19
    • 0026458235 scopus 로고
    • Tyrphostins: tyrosine kinase blockers as novel antiproliferative agents and dissectors of signal transduction
    • Levitzki, A. Tyrphostins: tyrosine kinase blockers as novel antiproliferative agents and dissectors of signal transduction. FASEB J. 6: 3275-3282, 1992.
    • (1992) FASEB J. , vol.6 , pp. 3275-3282
    • Levitzki, A.1
  • 21
    • 0026666967 scopus 로고
    • Inhibition of platelet-derived growth factor-induced mitogenesis and tyrosine kinase activity in cultured bone marrow fibroblasts by tyrphostins
    • Bryckaert, M.C. Eldor, A. Fontanay, M. Gazit, A. Osherov, N. Gilon, C. Levitzki, A. and Tobelem, G. Inhibition of platelet-derived growth factor-induced mitogenesis and tyrosine kinase activity in cultured bone marrow fibroblasts by tyrphostins. Exp. Cell. Res. 799: 255-261, 1992.
    • (1992) Exp. Cell. Res. , vol.799 , pp. 255-261
    • Bryckaert, M.C.1    Eldor, A.2    Fontanay, M.3    Gazit, A.4    Osherov, N.5    Gilon, C.6    Levitzki, A.7    Tobelem, G.8
  • 22
    • 0025060320 scopus 로고
    • B-type receptor for platelet-derived growth factor mediates a chemotactic response by means of ligand-induced activation of the receptor protein-tyrosine kinase
    • Westermark, B. Siegbahn, H. Heldin, C.H. and Claesson-Welsh, L. B-type receptor for platelet-derived growth factor mediates a chemotactic response by means of ligand-induced activation of the receptor protein-tyrosine kinase. Proc. Natl. Acad. Sci. USA, 87: 128-132, 1990.
    • (1990) Proc. Natl. Acad. Sci. USA , vol.87 , pp. 128-132
    • Westermark, B.1    Siegbahn, H.2    Heldin, C.H.3    Claesson-Welsh, L.4
  • 23
    • 0026583942 scopus 로고
    • PDGF a- and β-receptors activate unique and common signal transduction pathways
    • Eriksson, A. Siegbahn, A. Westermark, B. Heldin, C.H. and Claesson-Welsh, L. PDGF a- and β-receptors activate unique and common signal transduction pathways. EMBO J. 77: 543-550, 1992.
    • (1992) EMBO J. , vol.77 , pp. 543-550
    • Eriksson, A.1    Siegbahn, A.2    Westermark, B.3    Heldin, C.H.4    Claesson-Welsh, L.5
  • 24
    • 0026039464 scopus 로고
    • Activation of the human c-Kit product by ligand-induced dimer-ization mediates circular actin reorganization and chemotaxis
    • Blume-Jensen, P. Claesson-Welsh, L. Siegbahn, A. Zsebo, K.M. Westermark, B. and Heldin, C.H. Activation of the human c-Kit product by ligand-induced dimer-ization mediates circular actin reorganization and chemotaxis. EMBO J. 10: 4121-4128, 1991.
    • (1991) EMBO J. , vol.10 , pp. 4121-4128
    • Blume-Jensen, P.1    Claesson-Welsh, L.2    Siegbahn, A.3    Zsebo, K.M.4    Westermark, B.5    Heldin, C.H.6
  • 25
    • 0027997863 scopus 로고
    • Different signal transduction properties of KDR and Flt1, two receptors for vascular endothelial growth factor
    • in press
    • Waltenberger, J. Claesson-Welsh, L. Siegbahn, A. Shibuya, M. and Heldin, C.H. Different signal transduction properties of KDR and Flt1, two receptors for vascular endothelial growth factor. J. Biol. Chem. in press, 1994.
    • (1994) J. Biol. Chem.
    • Waltenberger, J.1    Claesson-Welsh, L.2    Siegbahn, A.3    Shibuya, M.4    Heldin, C.H.5
  • 26
    • 0025763752 scopus 로고
    • cDNA cloning and expression of a human FGF receptor which binds acidic and basic FGF
    • Wennström, S. Sandstrom, C. and Claesson-Welsh, L. cDNA cloning and expression of a human FGF receptor which binds acidic and basic FGF. Growth Factors, 4: 197-208, 1991.
    • (1991) Growth Factors , vol.4 , pp. 197-208
    • Wennström, S.1    Sandstrom, C.2    Claesson-Welsh, L.3
  • 27
    • 0017776080 scopus 로고
    • Rapid isolation of plasma membranes in high yield from cultured fibroblasts
    • Thorn, D. Powell, A.J. Lloyd, C.W. and Rees, D.A. Rapid isolation of plasma membranes in high yield from cultured fibroblasts. Biochem. J. 765: 187-194, 1977.
    • (1977) Biochem. J. , vol.765 , pp. 187-194
    • Thorn, D.1    Powell, A.J.2    Lloyd, C.W.3    Rees, D.A.4
  • 28
    • 0014949207 scopus 로고
    • Cleavage of structural proteins during the assembly of the head of bacteriophage T4
    • Laemmli, U.K. Cleavage of structural proteins during the assembly of the head of bacteriophage T4. Nature (Lond.), 227: 680-685, 1970.
    • (1970) Nature (Lond.) , vol.227 , pp. 680-685
    • Laemmli, U.K.1
  • 29
    • 0023644651 scopus 로고
    • Purification of the receptor for platelet-derived growth factor from porcine uterus
    • Rönnstrand, L. Beckman, M.P. Faulders, B. Östman, A. Ek, B. and Heldin, C.H. Purification of the receptor for platelet-derived growth factor from porcine uterus. J. Biol. Chem. 262: 2929-2932, 1987.
    • (1987) J. Biol. Chem. , vol.262 , pp. 2929-2932
    • Rönnstrand, L.1    Beckman, M.P.2    Faulders, B.3    Östman, A.4    Ek, B.5    Heldin, C.H.6
  • 30
    • 0021254544 scopus 로고
    • Phosphorylation sites in enolase and lactate dehydrogenase utilized by tyrosine protein kinases in vivo and in vitro
    • Cooper, J.A. Esch, F.S. Taylor, S.S. and Hunter, T. Phosphorylation sites in enolase and lactate dehydrogenase utilized by tyrosine protein kinases in vivo and in vitro. J. Biol. Chem. 259: 7835-7841, 1984.
    • (1984) J. Biol. Chem. , vol.259 , pp. 7835-7841
    • Cooper, J.A.1    Esch, F.S.2    Taylor, S.S.3    Hunter, T.4
  • 31
    • 0026266094 scopus 로고
    • The kit ligand encoded at the murine Steel locus: a pleiotropic growth and differentiation factor
    • Besmer, P. The kit ligand encoded at the murine Steel locus: a pleiotropic growth and differentiation factor. Curr. Opin. Cell. Biol. 3: 939-946, 1991.
    • (1991) Curr. Opin. Cell. Biol. , vol.3 , pp. 939-946
    • Besmer, P.1
  • 33
    • 0025998533 scopus 로고
    • A receptor tyrosine kinase cDNA from a population of enriched primitive hematopoietic cells and exhibiting close genetic linkage to c-Kit
    • Matthews, W. Jordan, C. Gavin, M. Jenkins, N. Copeland, N. and Lemischka, I. A receptor tyrosine kinase cDNA from a population of enriched primitive hematopoietic cells and exhibiting close genetic linkage to c-Kit. Proc. Natl. Acad. Sci. USA, 88: 9026-9030, 1991.
    • (1991) Proc. Natl. Acad. Sci. USA , vol.88 , pp. 9026-9030
    • Matthews, W.1    Jordan, C.2    Gavin, M.3    Jenkins, N.4    Copeland, N.5    Lemischka, I.6
  • 34
    • 0027466849 scopus 로고
    • High affinity VEGF binding and developmental expression suggest Flk-1 as a major regulator of vasculogenesis and angiogenesis
    • Millauer, B. Wizigmann-Voos, S. Schnürch, H. Martinez, R. Moeller, N.P.H. Risau, W. and Ullrich, A. High affinity VEGF binding and developmental expression suggest Flk-1 as a major regulator of vasculogenesis and angiogenesis. Cell, 72: 835-846, 1993.
    • (1993) Cell , vol.72 , pp. 835-846
    • Millauer, B.1    Wizigmann-Voos, S.2    Schnürch, H.3    Martinez, R.4    Moeller, N.P.H.5    Risau, W.6    Ullrich, A.7
  • 35
    • 0027249239 scopus 로고
    • Fetal liver kinase 1 is a receptor for vascular endothelial growth factor and is selectively expressed in vascular endothelium
    • Quinn, T.P. Peters, K.G. De Vries, C. Ferara, N. and Williams, L.T. Fetal liver kinase 1 is a receptor for vascular endothelial growth factor and is selectively expressed in vascular endothelium. Proc. Natl. Acad. Sci. USA, 90: 7533-7537, 1993.
    • (1993) Proc. Natl. Acad. Sci. USA , vol.90 , pp. 7533-7537
    • Quinn, T.P.1    Peters, K.G.2    De Vries, C.3    Ferara, N.4    Williams, L.T.5
  • 36
    • 0027405244 scopus 로고
    • NYK/FLK-1: a putative receptor protein tyrosine kinase isolated from E10 embryonic neuroepi-thelium is expressed in endothelial cells of the developing embryo
    • Oelrichs, R.B. Reid, H.H. Bernard, O. Ziemicki, A. and Wilks, A.F. NYK/FLK-1: a putative receptor protein tyrosine kinase isolated from E10 embryonic neuroepi-thelium is expressed in endothelial cells of the developing embryo. Oncogene, 8: 11-18, 1993.
    • (1993) Oncogene , vol.8 , pp. 11-18
    • Oelrichs, R.B.1    Reid, H.H.2    Bernard, O.3    Ziemicki, A.4    Wilks, A.F.5
  • 39
    • 0023649622 scopus 로고
    • Tyrosine phosphorylation regulated the biochemical and biological properties of pp. 60c-Src
    • Piwnica-Worms, H. Saunders, K.B. Roberts, T.M. Smith, A.E. and Cheng, S.H. Tyrosine phosphorylation regulated the biochemical and biological properties of pp. 60c-Src. Cell, 49: 75-82, 1987.
    • (1987) Cell , vol.49 , pp. 75-82
    • Piwnica-Worms, H.1    Saunders, K.B.2    Roberts, T.M.3    Smith, A.E.4    Cheng, S.H.5
  • 40
    • 0023392494 scopus 로고
    • Activation of the oncogenic potential of the avian cellular Src protein by specific structural alteration of the carboxyl terminus
    • Reynolds, A.B. Vila, J. Lansing, T.J. Potts, W.M. Weber, M.J. and Parsons, J.T. Activation of the oncogenic potential of the avian cellular Src protein by specific structural alteration of the carboxyl terminus. EMBO J. 6: 2359-2364, 1987.
    • (1987) EMBO J. , vol.6 , pp. 2359-2364
    • Reynolds, A.B.1    Vila, J.2    Lansing, T.J.3    Potts, W.M.4    Weber, M.J.5    Parsons, J.T.6
  • 41
  • 42
    • 0023848656 scopus 로고
    • Autocrine stimulation of intracellular PDGF receptors in v-sis-transformed cells
    • Keating, M.T. and Williams, L.T. Autocrine stimulation of intracellular PDGF receptors in v-sis-transformed cells. Science (Washington DC), 239: 914-916, 1988.
    • (1988) Science (Washington DC) , vol.239 , pp. 914-916
    • Keating, M.T.1    Williams, L.T.2
  • 43
    • 0024242552 scopus 로고
    • Rapid turnover of the platelet-derived growth factor receptor in sis-transformed cells and reversal by suramin
    • Huang, S.S. and Huang, J.S. Rapid turnover of the platelet-derived growth factor receptor in sis-transformed cells and reversal by suramin. J. Biol. Chem. 263: 12608-12618, 1988.
    • (1988) J. Biol. Chem. , vol.263 , pp. 12608-12618
    • Huang, S.S.1    Huang, J.S.2
  • 44
    • 0026806895 scopus 로고
    • Migration of smooth muscle and endothelial cells. Critical events in restenosis
    • Cascells, W. Migration of smooth muscle and endothelial cells. Critical events in restenosis. Circulation, 86: 723-729, 1992.
    • (1992) Circulation , vol.86 , pp. 723-729
    • Cascells, W.1
  • 45
    • 0027157897 scopus 로고
    • Proliferative activity in peripheral and coronary atherosclerotic plaque among patients undergoing percutaneous revascularization
    • Pickering, J.G. Weir, L. Jekanowski, J. Kearney, M.A. and Isner, J.M. Proliferative activity in peripheral and coronary atherosclerotic plaque among patients undergoing percutaneous revascularization. J. Clin. Invest. 91: 1469-1480, 1993.
    • (1993) J. Clin. Invest. , vol.91 , pp. 1469-1480
    • Pickering, J.G.1    Weir, L.2    Jekanowski, J.3    Kearney, M.A.4    Isner, J.M.5
  • 46
    • 0027325639 scopus 로고
    • Luminal narrowing after percutaneous transluminal coronary angioplasty. A study of clinical, procedural and lesional factors related to long-term angiographic outcome. Coronary artery restenosis prevention on repeated thromboxane antagonism (CARPORT) study group
    • Rensing, B.J. Hermans, W.R. Vos, J.G. Rutch, W. Danchin, N. Heyndrickx, G.R. Mast, E.G. Wijns, W. and Serruys, P.W. Luminal narrowing after percutaneous transluminal coronary angioplasty. A study of clinical, procedural and lesional factors related to long-term angiographic outcome. Coronary artery restenosis prevention on repeated thromboxane antagonism (CARPORT) study group. Circulation, 88: 975-985, 1993.
    • (1993) Circulation , vol.88 , pp. 975-985
    • Rensing, B.J.1    Hermans, W.R.2    Vos, J.G.3    Rutch, W.4    Danchin, N.5    Heyndrickx, G.R.6    Mast, E.G.7    Wijns, W.8    Serruys, P.W.9
  • 47
    • 0027198702 scopus 로고
    • Selective inhibition of the epidermal growth factor and HER2/Neu receptors by tyrpnostins
    • Osherov, N. Gazit, A. Gilon, C. and Levitzki, A. Selective inhibition of the epidermal growth factor and HER2/Neu receptors by tyrpnostins. J. Biol. Chem. 268: 11134-11142, 1993.
    • (1993) J. Biol. Chem. , vol.268 , pp. 11134-11142
    • Osherov, N.1    Gazit, A.2    Gilon, C.3    Levitzki, A.4
  • 48
    • 0024240990 scopus 로고
    • Blocking of EGF-dependent cell proliferation by EGF receptor kinase inhibitors
    • Yaish, P. Gazit, A. Gilon, C. and Levitzki, A. Blocking of EGF-dependent cell proliferation by EGF receptor kinase inhibitors. Science (Washington DC), 242: 933-935, 1988.
    • (1988) Science (Washington DC) , vol.242 , pp. 933-935
    • Yaish, P.1    Gazit, A.2    Gilon, C.3    Levitzki, A.4
  • 49
    • 0028223221 scopus 로고
    • Kinetics of inhibition by tyrphostins of the tyrosine kinase activity of the epidermal growth factor receptor and analysis by a new computer program
    • Posner, I. Engel, M. Gazit, A. and Levitzki, A. Kinetics of inhibition by tyrphostins of the tyrosine kinase activity of the epidermal growth factor receptor and analysis by a new computer program. Mol. Pharmacol. 45: 673-683, 1994.
    • (1994) Mol. Pharmacol. , vol.45 , pp. 673-683
    • Posner, I.1    Engel, M.2    Gazit, A.3    Levitzki, A.4
  • 50
    • 0024434810 scopus 로고
    • Tyrphostins I: synthesis and biological activity of protein tyrosine kinase inhibitors
    • Gazit, A. Yaish, P. Gilon, C. and Levitzki, A. Tyrphostins I: synthesis and biological activity of protein tyrosine kinase inhibitors. J. Med. Chem. 32: 2344-2352, 1989.
    • (1989) J. Med. Chem. , vol.32 , pp. 2344-2352
    • Gazit, A.1    Yaish, P.2    Gilon, C.3    Levitzki, A.4
  • 51
    • 0024446197 scopus 로고
    • Inhibition of insulin dependent lipogenesis and antilipolysis by protein tyrosine kinase inhibitors
    • Schechter, Y. Yaish, P. Chorev, M. Gilon, C. Braun, S. and Levitzki, A. Inhibition of insulin dependent lipogenesis and antilipolysis by protein tyrosine kinase inhibitors. EMBO J. 8: 1671-1676, 1989.
    • (1989) EMBO J. , vol.8 , pp. 1671-1676
    • Schechter, Y.1    Yaish, P.2    Chorev, M.3    Gilon, C.4    Braun, S.5    Levitzki, A.6


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