Fig. 4. Analysis of proliferation in the Fgf8 mutants at E9.0.
Anti-phosphohistone3 (PH3) immunofluorescence on horizontal sections through
the forebrain labels the nuclei of mitotic cells in wild-type (A-E),
Fgf8Null/Neo (A'-E') and
Fgf8TelKO (A''-E'') embryos. A-A''
are the most ventral; E-E'' are the most dorsal. Note, sections
B,B',B'' are the same as in Fig.
3. Os, optic stalk; Tel, telencephalon.