agar
analysis
antibiotic
antimicrobial
bacteria
bacterial
bacterium
biochemistry
biology
chemistry
colonies
colony
culture
diphtheria
drug
escherichia coli
experiment
gentamicin
infectious disease
inhibition zone
laboratory
medical
medical exam
medicine
microbial
microbiology
microorganism
mycobacterium
penicillin
petri dish
plate
pneumonia
research
resistance
science
scientific experiment
sensitivity
staphylococcus aureus
streptococcus
streptomycin
susceptibility
test