DAB

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DAB

Abbreviation for 3'3-diaminobenzidine HCl; in the immunoperoxidase technique, used to produce a colored complex at the site of peroxidase activity.

diaminobenzidine

(dī″ă-mēn″ō-bĕn′zĭ-dēn″),

DAB

A chromogen, C12H14N4, used in immunocytochemistry to highlight peroxidase.
References in classic literature ?
Japp had taken out a handkerchief, and was gently dabbing his brow.
She then dismissed that attendant for the night, and went on to be advised; dabbing her eyes and forehead from time to time to cool them.
I promise you nothing,' said the dolls' dressmaker, dabbing two dabs at him with her needle, as if she put out both his eyes.