This is a basic question but one I do need advice with. My high school phage team will begin looking for a phage next fall from a new host. The host has not been studied much for phages. How do you choose a top agar for new hosts/phages? Is there a generic TA that works well? We currently use MBTA for Mycobacterium but I did not know if top agars are phage specific. Thanks for your guidance.