Negative
Gram negative or positive?
Cocci
Cocci or bacilli?
Bacilli
Gram negative or positive?
Positive
Negative
Transparent
Non-haemolytic
Haemolytic or non-haemolytic?
Anaerobe
Yellow or white?
Yellow
Located in the respiratory
tract/nasal cavity or mouth?
Mouth
Respiratory tract/nasal cavity
Aerobic
Obligate
aerobe
Complete
Incomplete greenish
White
Anaerobic
Fac.
anaerobe
Haemolytic
Complete or incomplete
greenish haemolysis?
Aerobic or anaerobic?
Obligate aerobe,
anaerobe or
facultative anaerobe?
Opaque or transparent/milky?
Opaque
Positive
Tests to distinguish
viridans Streptococcus
(v) from Spreptococcus
pneumoniae (p):
Red
Red or pale
on
MacConkey's
medium?
Pale
Haemolytic or non-haemolytic?
Haemolytic
Non-haemolytic