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

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