Online Microbiology and Biology Study Notes
Answer: It is a non-selective, non-differential medium. This means that almost all organisms plated on here will grow. It contains starch. Starch is known to absorb toxins released from bacteria so that they cannot interfere with the antibiotics. It also mediates the rate of diffusion of the antibiotics through the agar. It is a loose agar. This allows for better …
Read moreWhy MHA is used for antibiotic susceptibility testing?
In the treatment and control of infectious diseases, especially when caused by pathogens that are often drug-resistant, susceptibility (sensitivity) testing is used to select effective antimicrobial drugs. Susceptibility testing is not usually indicated when the susceptibility reactions of a pathogen can be predicted, for example: – Proteus species are generally resistant to nitrofurantoin and tetracyclines, – S. pyogenes is usually …
Read moreAntimicrobial Susceptibility Testing (AST)- Types and Limitations