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Fig. 3. Absence of hematopoietic cells and increase of endothelial cells in the
P-Sp/AGM of RBPj
mutant embryos. (A) Semiquantitative RT-PCR
analysis in dissected P-Sp of E9.5 wild-type and RBPj
mutants.
Representative PCR products after 35 and 40 cycles of two independent
experiments are shown (B) WISH of hematopoietic transcription factors and
transverse sections of E9.5 aortas of wild-type and RBPj
mutants. (C) WISH with VE-C (upper panel), expression of
VE-C in the aorta (middle panels) and expression of PECAM/CD31 by
immunofluorescence (lower panel) on transverse sections of E9.5 aortas of
wild-type and RBPj
mutants. Orientation of the aortas is
dorsal (up) to ventral (down).