spacer gif spacer gif spacer gif spacer gif spacer gif
QUICK SEARCH:   [advanced]


spacer gif
     Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents    

Right arrow Help viewing high resolution images
Right arrow Return to article
(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.



Fig. 6. Shh signaling is confined to ventral brain regions. Shh (A,C) and Ptch (B,D) expression were examined at the 14- (A, B), 24- (C) and 21-somite (D) stages. Ptch was not detectable in any dorsal parts of the brain. Note that lateral expansion of Shh expression in the ZLI initiates at the 24-somite stage (C, arrow). Arrowhead indicates the diencephalon-midbrain boundary.





Right arrow Return to article