the topographic precision of the regenerating retinotectal projection of the goldfish was studied between 18 and 524 days ( at 20 degrees c ) after optic nerve cut , using retrograde transport of wheatgerm agglutinin conjugated to horseradish peroxidase ( wga-hrp ) from one of two standardized tectal injection sites .
C0019941
horseradish peroxidase
C0078473
wga-hrp