MICRO Flashcards
what is the aniline dye used in acid fast stain to identify mycoplasma
carbolfuchsin
what is stained in an acid fast stain
mycolic acid
what does IFN-g do
it activates macrophages and causes the differention of helper t cells
IFN-g is produced by
activated t lymphocytes and NK cells
IFN-g release assy test for what
latent TB
IFN-g test what kind of immune response
cell mediated
what does elevated lactate DH mean
that there is cell damage or tissue damage, it is also high when bacteria is present
also seen when there is hemolytic anemia
due to the immune response seen when someone has mycoplasma what can happen
the patient can have hemolytic anemia because the antigens on the bacteria are the same as the ones on the red blood cells ( production of cold agglutinins IgM)
what is shown on buffered charcoal yeast extract medium supplemented with L-cystene and iron
Legionella
silver stains improve the visualization of what organism
Legionella
ETEC causes battery diarrhea in
travelers and kids
The LT enterotoxin in ETEC is similar to what
Cholera Like Toxin
what ETEC toxin increases cAMP by stimulating Gs
LT
what ETEC toxin increases cGMP in the apical membranes of the host gut mucosa
ST
what inhibits the 60s subunits in human cells and inhibits the human cell protein production and causes death
Shigga Toxin (EHEC)
stacked brick intestinal adhesion is characteristic of what bacteria
EAEC enteroaggregative e.coli
aspergliomas usually occur in what lung lobe
the upper one
thick walled spherules packed with endospores is indicative of
Coccidies immitis
agar for Cocciodies Immitis
Sabourad Agar
small oval yeast inside macrophages is seen in ( smaller then an RBC)
Histoplasma
ribbon like hyphae with rare separations . wide angles
Rhizupus
spiral shaped gram - spirochete
T. Palladium ( so thin it cannot be seen on gram stain)
what test is used to see t. palladium
dark field light microscopy
painful ulcer (chancroid) with regional lymphadenopathy is seen in what bacteria
Haemophillus Ducreyi