set of probiotic bacteria bulgaricus, lactobacillus, propionbacterium and lactococcus. good microbes for gut health

bacteria probiotic set bulgaricus lactobacillus propionbacterium lactococcus 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 pink purple round cartoon illustration