in the rattlesnake , horseradish perosidase ( hrp ) injections into the nucleus reticularis caloris ( rc ) result in retrograde filling of cells in the ipsilateral nucleus of the lateral descending trigeminal tract ( lttd ) and in the anterograde labelling of terminal fields in the contralateral optic tectum , confirming our previous finding of an rc-tectal projection .
C0228405
optic tectum
C0039433
tectal