the efferent connections of the substantia innominata ( si ) were investigated employing the anterograde axonal transport of phaseolus vulgaris leucoagglutinin ( pha-l ) and the retrograde transport of wheat germ agglutinin conjugated to horseradish peroxidase ( wga-hrp ) .
C0019941
horseradish peroxidase
C0078473
wga-hrp