probiotic bacterium microscopic cells emoji set

acidophilus bacillus bacteria bacterial bacteriology bacterium bifidobacterium biological biology bulgaricus cartoon cell digestion emoji emoticon face fermentation flat germ gut healthy human icon illustration infection intestine isolated lactic lactobacillus lactococcus medical medicine micro microbe microbiology microorganism microscopic organism positive prebiotic probiotic probiotics propionibacterium set sign smile streptococcus symbol thermophilus vector