following a large injection of lectin-bound horseradish peroxidase ( wga-hrp ) into visual cortex , many retrogradely labeled neurons are found in the medial two-thirds of area 17 which does not receive callosal afferents , as well as in the lateral , callosal-recipient zone .
C0019941
horseradish peroxidase
C0078473
wga-hrp