Flashcards in Microbiology Deck (20):
hyaluronic acid significance
component of group A strep extracellular capsule; believed to play a role in virulence.
Only gram-positive that produces LPS
Periodic acid schiff stain use in microbio
What does gram staining detect?
peptidoglycan, which is present in a thick layer in Gram-positive bacteria. The membrane is being stained.
How do Gram-negative bacteria appear?
Gram-negative stain with the counterstain (safranin or fuschine), giving Gram-negatives a RED or PINK coloring.
What do gram-positive retain?
Crystal violet dye.
What happens if you stain acid-fast bacteria?
Show up as if they are gram-positive, mostly because of thick cell wall.
How do gram positives appear on gram stain?
What causes skin presentation in scarlet fever?
respiratory tract epithelia?
Everything is ciliated columnar except for the vocal folds (squamous) and epiglottis (squamous)
- caused by HPV types 6 and 11.
- warts form on the larynx or other areas of the respiratory tract causing dyspnea.
Respiratory papillomatosis histology
finger-shaped lesions with benign vascular core lined with BENIGN squamous epithelium
Mood disorder similar to depression but with less severe but *longer-lasting symptoms.
Greater than 2 weeks of hallucinations or delusions WITHOUT major mood episodes + periods of concurrent major mood episodes with schizophrenic symptoms.
genetics of panic disorder
strong genetic component
RNA pol II
cryptococcus on a slide
Looks like RBCs