hematopoietic system
N |
• with maternal injection of high-dose tamoxifen on E7.5 to induce Runx1 reactivation, trasnsplanted, hematopoietic stem cells were isolated and injected into irradiated recipients for a long-term competitive repopulation assay; at E14.5 and E16.5, no signficant differences in reconstitution levels of hematopoietic cells is observed relative to controls
• secondary transplantation of yolk sac-derived bone marrow cells from the primary recipients 12 months following primary transplantation resulted in long-term engraftment
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• exposure of embryos to tamoxifen at E10.5 fails to result in observation of CD45+ definitive hematopoietic cells in the aorta-gonad-mesonephros (AGM) region (no rescue of definitive hematopoiesis), whereas after exposure to tamoxifen at E7.5, a large population of CD45-positive cells are detected
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