the ascending projections of cholinergic neurons in the laterodorsal tegmental nucleus ( tld ) were investigated in the rat by using phaseolus vulgaris leucoagglutinin ( pha-l ) and wheat germ agglutinin-conjugated horseradish peroxidase ( wga-hrp ) anterograde tracing techniques .
C0019941
horseradish
C0078473
wga-hrp