The p-dimethylaminobenzaldehyde reaction for pyrroles in histochemistry:  melanins, enterochromaffin, zymogen granules, lens.
D000447:Aldehydes; D001547:Benzaldehydes; D006651:Histocytochemistry; D006801:Humans; D007202:Indicators and Reagents; D007908:Lens, Crystalline; D008543:Melanins; D011758:Pyrroles; D022142:Secretory Vesicles
D000447:Aldehydes; D001547:Benzaldehydes; D007202:Indicators and Reagents; D008543:Melanins; D011758:Pyrroles; C510241:p-dimethylaminobenzaldehyde
ALDEHYDES; PYRROLES; REAGENTS