"horseradish peroxidase"@en-us . "0.125"^^ . . . . "an enzyme used in immunohistochemistry to label antigens and their antibodies"@en-us . . . . . . "0.125"^^ . . . . "horseradish peroxidase"^^ . "14612618-n"^^ . "114612618"^^ . . "113776186"@en-us .