Aldehyde Fixatives

Question 1

Most commonly used fixative in HP

Answer 1

10% formol-saline

Question 2

Best fixative for CNS tissues and general post-mortem for histochem exam

Answer 2

10% formol-saline

Question 3

Ideal for silver impregnation

Answer 3

10% formol-saline

Question 4

Replaced formol-saline as most commonly used fixative

Answer 4

Calcium acetate formalin (Lillie’s)

Question 5

Used to preserve phospholipids

Answer 5

Calcium acetate formalin (Lillie’s)

Question 6

Best general tissue fixative

Answer 6

10% NBF

Question 7

Best fixative for frozen sections

Answer 7

10% NBF

Question 8

Best fixative for iron-containing pigments and elastic fibers

Answer 8

10% NBF

Question 9

Excellent for silver reticulum methods

Answer 9

Formol corrosive

Question 10

Enhances immunoperoxidase studies

Answer 10

Alcoholic formalin

Question 11

Sputum cytology

Answer 11

Alcoholic formalin

Question 12

Good fixative for astrocytes

Answer 12

Cajol’s Formol Ammonium Bromide

Question 13

Preservation of lipids since most formalin fixatives are inert to lipids

Answer 13

Baker’s Formol Calcium

Question 14

Most effective aldehyde for protein cross-linking

Answer 14

Glutaraldehyde