clinical microbiology
Terms
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- Gram stain
-
bacteria, cocci& rods
positive: purple (thick cell wall- less dangerous)
neg: red/pink (thin cell wall- dangerous) - acid-fast
- myobacteria, cryptospordidium
- capsule stain
- cryptococcus fungi
- Giesma stian
- protozoan parasites, malaria
- Gram-variable
- bacteria w/out gram stain results
- catalase test
- most bacteria catalas + (liberate H & O gas when H2O2)
- Coagulase test
- staph. family
- Beta-hemolysis
- bacteria hemolyzes blood: clear zones at growth
- Bile-esculin
- metabolizes bile-esculin
- Lactose fermentation
- agar has lactose, bacteria will use it and agar chages color red --> purple at growth
- Oxidase activity
- some bacteria have oxidase enzyme