Medium: Casein
agar
Culture: Nocardia asteroides
(inoculated in the center)
Results:
Negative (no clearing zone of
hydrolysis). Majority of the strains
isolated from clinical specimens are
Nocardia asteroides. Casein hydrolysis by Nocardia
brasiliensis occurs slowly. Occurrence rate of Nocardia
brasiliensis is very low (~ 2%)
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