probiotics bacteria . biology, science microscopic medicine. digestion stomach escherichia coli, treatment, health care

extremophiles beneficial thermophiles nitrogen symbiotic prokaryotes microorganisms nitrogenfixation bacillus microbes germs coccus halophiles decomposers sell microscopic antibiotic grampositive replication colonies cellwall geneticmaterial resistance microflora bacteria unicellular anaerobic aerobic methanogens acidophiles division shapes organisms dna binaryfission probiotic metabolism cells gramnegative harmful plasmids infection growth flagella spiral pathogenic microbiome pathogens reproduction ai generated