set of probiotic bacteria lactobacillus, lactococcus and acidophilus good microbes for gut health and microbial flora

set bacteria probiotic lactobacillus lactococcus acidophilus good microbe gut health microbial flora vector icon germ prebiotic bifidobacterium bacterium bifidobacteria symbol bacillus bio cell label logo anaerobic biotechnology healthy stomach intestinal virus sign collection tag badge emblem bundle clipart isolated white background green round cartoon design element graphic illustration