Sunday, April 12, 2009

Lactobacillus

Lactobacillus stain
“gram variable”


Young Culture = Gram (+)
Older Culture = Gram (-)
Morphology = Rod

=> Streak Plate:
  • Medium: Tomato juice agar (Selective for low pH )
  • Source: Saliva
=> Dental Caries Susceptibility Test:
  • Medium: Snyder Test agar
  • Indicator: Bromcresol Green
  • Source: Saliva
Snyder test agar


Friday, April 3, 2009

Genus: Staphylococcus

Gram Positive Staph

Members of the genus Staphylococcus are gram-positive, spherical organism in grape-like clusters.