A RETROGRADE DOUBLE-LABELING STUDY OF UNILATERALLY AND BILATERALLY PROJECTING RETINAL GANGLION-CELLS THAT PROJECT TO THE SUPERIOR COLLICULIAFTER UNILATERAL EYE REMOVAL AT BIRTH IN THE ALBINO-RAT

By injecting Fluoro-Gold and Evans-Blue into the right and left superi or colliculi of the normal adult albino rats, bilaterally projecting r etinal ganglion cells were labeled in the ventrotemporal crescent acco unting for 37.9% of all the labeled cells, whereas in 0- and 5-day uni laterally enucleated rats these were found in the lower half of the re tina accounting for 64.8% and 80.6%, respectively. Furthermore, they t ended to have larger somata (type I cells).