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Fig. 1. (A) Summary of the different Gata1 mutants discussed and their outcome in
terms of erythroid differentiation. FL, floxed; OX, overexpressing; KO,
deleted Gata1 allele; WT, wild type. The progeny obtained in the crossing
described in the present manuscript is indicated a-f, in accordance with
Fig. 3A,
Fig. 4C and
Fig. 5A. (B) REDS signalling
and erythroid differentiation. Heterotypic and homotypic cell-cell signalling
mechanisms. 1 and 2 are different type of cells.