patterns of cortical connections were studied in brain sections cut parallel to the surface of mechanically flattened cortex after single , double , or multiple injections of wheatgerm agglutinin conjugated to horseradish peroxidase ( wga-hrp ) in area 17 of galagos ( galago crassicaudatus ) .
C0019941
horseradish peroxidase
C0078473
wga-hrp