Hoyle's agar is a selective medium that uses tellurite to differentially select Corynebacterium diphtheriae from other upper respiratory tract flora. The medium appears cream to yellow colored, and takes the form of a free-floating powder. It is a modification of Neill's medium.
Hoyle's tellurite agar contains:
|Proteose peptone||10 g/L|
|Beef extract||10 g/L|
|Sodium chloride||5 g/L|
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