Which fastidious genus requires hemin (X factor) and NAD (X factor) in its growth medium?

Name: Which fastidious genus requires hemin (X factor) and NAD (X factor) in its growth medium?
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Question

Quizplus · Accepted Answer

Haemophilus requires both hemin (X factor) and NAD (V factor) for growth and is therefore considered a fastidious organism. Legionella, Brucella, and Shigella are also considered fastidious, but they may require other specific nutrients for growth, such as cysteine or other specialized growth factors.

Which Fastidious Genus Requires Hemin (X Factor) and NAD (X