Figure 7. Abnormal Slit1 expression in spinal cords at embryo stages of Nkx6.1 mutant.
Spinal cord sections from E12.5 to E18.5 embryos were subjected to ISH with Slit1 riboprobe in WT and Nkx6.1−/− mice. Slit1 expression in the ventral white matter was significantly reduced at E16.5. At E18.5, Slit1 expression was observed in the ventral astrocyte subtypes 2 and 3 (VA2 and VA3) in wild-type embryos, but only in VA3 astrocytes in Nkx6.1 mutants (outlined by dashed lines in G- H). Scale bars: 100 µm.