of human microbiota

bacilli bacillus bacteria bacterial bacteriology bacterium bad bifidobacteria bifidobacterium biohazard biology care cell clostridium collection colon contaminants disease enterobacter flora germ good gram gut health human icon illness illustration immune infection isolated lactobacillus microbe microbiology microbiome microbiota microscopic pathogen pathogenic positive probiotic salmonella set shigella staphylococcus streptococcus symbol system vector