Continuity and discontinuity of the radial scaffolding in the forebrain of a lizard embryo.
We have used ventricular injections of the fluorescent carbocyanine dye DiI (Molecular Probes, Eugene, OR, USA) to demonstrate the scaffolding of the radial ventricular cells in the embryonic forebrain of lizards. The results reveal changes of density, orientation, or thickness of the radial processes between adjacent regions. On the whole, they support the idea that the hypothalamus together with the telencephalic stalk and the telencephalic hemispheres make up the anterior region of the neural tube or secondary prosencephalon, as proposed by the prosomeric model. In contrast, the thalamic eminence seems part of the diencephalon.
Alonso
Antonia
A
Department of Microbiology and Cell Biology, University of La Laguna, La Laguna, Tenerife, Spain.
Trujillo
Carmen M a
CM
D000818:Animals; D002232:Carbocyanines; D005456:Fluorescent Dyes; D008116:Lizards / Q000196:embryology*; D009457:Neuroglia / Q000166:cytology*; D016548:Prosencephalon / Q000166:cytology* / Q000196:embryology*; D013687:Telencephalon / Q000166:cytology / Q000196:embryology; D013788:Thalamus / Q000166:cytology / Q000201:enzymology
C035005:3,3'-dihexadecylindocarbocyanine; D002232:Carbocyanines; D005456:Fluorescent Dyes