following microinjection of wheat germ agglutinin conjugated to horseradish peroxidase ( wga-hrp ) into the pressor region of the rostral ventrolateral medulla of the cat , the medulla , pons and hypothalamus were examined for retrogradely labelled cell bodies , while the thoracolumbar segments of the spinal cord were examined for anterogradely labelled axons .
C0019941
horseradish
C0078473
wga-hrp