Bcl-2, which can both reduce apoptosis and retard cell cycle entry, is thought to have important roles in hematopoiesis. To evaluate the impact of its ubiquitous overexpression within this system, we targeted expression of the human bcl-2 gene in mice by using the promoter of the vav gene, which is active throughout this compartment but rarely outside it. The vav-bcl-2 transgene was expressed in essentially all nucleated cells of hematopoietic tissues but not notably in nonhematopoietic tissues. Presumably be…
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