Problem
• Which ingredient (s) in EMB agar supply (ies)
o Carbon?
o Nitrogen?
• What is the role of lactose in EMB agar?
• What is the application (purpose) of HE agar?
• What is the role of bile salts in HE agar?
• The streak- stab technique, used to promote streptolysin activity, is preferred over incubating the plates anaerobically. Why do you think this is so?