I have some questions related to classical microbiology.
Can I prepare a bacterial suspension for a disk diffusion susceptibility testing from a blood agar plate? Is there any inconvenient? All guidelines say that I should use "non-selective medium" but that is how far they go. Is there any official document stating what kinds of mediums can be used?
In a related matter, is there any problem on extracting DNA from a selective medium plate? Can that interfere with PCR reactions somehow? Again, do you know about any document that state that?
Thanks a lot.