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Fig. 5. Widespread apoptosis in E9.5 Mll2/
embryos. Paraffin sections were taken from an
Mll2/ embryo (A) and a
Mll2+/+ littermate (B), stained with TUNEL and then
with Hematoxylin and Eosin. For greater contrast, A shows a section after
TUNEL but before Hematoxylin and Eosin staining. (C) The average ratio
of apoptotic cells to total cells from three embryos each yields the apoptotic
index.