To cultivate Legionella in the laboratory, a medium supplemented with what ingredient(s) is necessary?
a. L-cysteine and iron
b. Blood and cysteine
c. Dopa-cysteine
d. Nicotinic adenine
A
Only one genus, Legionella, exists in the Legionellaceae family. All members of this genus are faintly staining, thin, gram-negative bacilli that require a medium supplemented with iron and L-cysteine and buffered to pH 6.9 for optimal growth.
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