combinations of tracers included the retrograde transport of tritiated wheat germ agglutinin , wheat germ agglutinin conjugated with horseradish peroxidase ( wga-hrp ) and fluoro-gold from the hypothalamus , amygdala or thalamus/zona incerta together with either the anterograde transport of wga-hrp from the spinal cord or the degeneration of spinal terminals following spinal lesions .
C0019941
horseradish peroxidase
C0078473
wga-hrp