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Is BEA a defined or undefined medium? Provide the reasoning behind your choice and explain why this is formulation is desirable.
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Is BEA a defined or undefined medium? Provide the reasoning behind your choice and explain why this is formulation is desirable.

User Hanako
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Bile esculin agar is an undefined medium, as it contains beef extract as its component. It is a selective, and differential medium. The formulation is required to make it a selective (bile as an agent), and differential (esculin as an agent)
User Redelschaap
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