Growth of most Haemophilus species in culture is enhanced by:

a. incubation at 33°C to 35°C.
b. high humidity.
c. 5% to 10% carbon dioxide (CO2).
d. enriched special media.


C
All of the choices describe conditions necessary for the cultivation of H. ducreyi. Other Haemo-philus species do not have these requirements but are enhanced by increased (5% to 10%) CO2.

Biology & Microbiology

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