mortality/aging
• only about 25% of mice survive to adulthood
• surviving mice show signs of spontaneous regression of the hyperproliferative dysregulation of erythropoiesis
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• rapid lethality in about 75% of neonatal mice
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hematopoietic system
• mice appear to die of hyperproliferative dysregulation of erythropoiesis
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• dramatic dysregulation of hematopoiesis characterized by excessive numbers of nucleated cells in the peripheral blood
• increase in nucleated cells is primarily the result of a population of small blastic cells with sparse cytoplasm
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• survivors develop mastocytosis similar to that in mice carrying Tg(Kit*D814V)3Roer and Tg(Mx1-cre)1Cgn
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• increase in the number of nuclear shadows in blood smears indicates the presence of cells with increased mechanical fragility
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liver/biliary system
• most of the liver parenchyma is replaced with Ter119+ cells
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immune system
• survivors develop mastocytosis similar to that in mice carrying Tg(Kit*D814V)3Roer and Tg(Mx1-cre)1Cgn
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