Acid-Fast Staining Flashcards
1
Q
pathogenic
A
disease-causing species
2
Q
acid-fast staining purpose?
A
to look for the presence of mycolic acid
3
Q
what are the two pathogens this stain is used to identify
A
mycobacterium and nocardia
4
Q
mycolic acid?
A
cell walls of lipid acid-fast organisms contain this which renders the cell wall impermeable to most stains
5
Q
carbolfuchsin?
A
dark red dye with high affinity for mycolic acid
6
Q
In an acid-fast stain, what color will a NEGATIVE result be?
A
BLUE
7
Q
What color is a positive acid fast?
A
REDDISH PURPLE
8
Q
clinical significance of acid-fast postive bacteria
A
they increase virulence
