What is in Hollande fixative?

• A. Acetic acid, copper acetate, formaldehyde, picric acid
• B. Acetic acid, formaldehyde, picric acid
• C. Acetic acid and copper acetate only
• D. Formaldehyde, picric acid, copper acetate

Answer: (A)

Hollande fixative is defined by four ingredients: acetic acid, copper acetate, formaldehyde, and picric acid. Acetic acid penetrates quickly and helps preserve nuclear detail and glycogen-rich areas. Formaldehyde crosslinks proteins, stabilizing tissue architecture. Picric acid acts as a strong protein precipitant, enhancing contrast and overall tissue morphology. Copper acetate provides copper ions that modulate the fixative’s action, influencing staining characteristics and helping balance tissue preservation. This specific combination gives Hollande fixative its distinctive fixation properties, distinguishing it from other fixatives that contain only three components.