Fig. 3.
Rb expression during polyploidization.
Human megakaryocytes were sorted as in Figure 1. A similar technique of sorting was used for murine megakaryocytes at day 2 of culture, but only the cell fraction with at least 8N was recovered. Western blot was performed with an anti-Rb mAb, which recognizes both the human (panel A) and murine (panel B) molecules. The human epithelial cell line SAOS (panel A) and the murine stromal cell line MS-5 (panel B) were used as controls. Western blots are from a representative experiment (nā=ā3).