finals lesson 3

Question 1

➢ Usesperiodic acid to oxidize 1,2 glycol grp of
polysaccharides and mucin, liberating aldehydes

Answer 1

Periodic Acid Schiff (PAS) reaction

Question 2

➢ Producesred-magenta or purplish-pink color
➢ Intensityof reaction is proportional to the sugar content
(glu, gal, man, fucose and hexoamines

Answer 2

PAS REACTION

Question 3

______________ will cause considerable
loss of PAS activity

Answer 3

Routinefixation & decalcification

Question 4

Basicfuschin w/c is admixture of rosanilin,
pararosanilin and magenta II

Answer 4

Schiff reagent

Question 5

Schiff rgt Uses __________ to oxidize Colorless
leukofuchsin => magenta colored basic fuchsin

Answer 5

sulfur dioxide