lactobacillus. probiotic. lactococcus lactis. infographics. on background.

abstract acidophilus antibiotic bacillus background bacteria bacterial bacteriology bacterium bifidobacteria bifidobacterium biological biology biotechnology bulgaricus cancer cell digestion dna fermentation flora germ health healthcare icon illustration infection isolated lactic lactobacillus lactococcus medical micro microbe microorganism microscopic molecule organism positive prebiotic probiotic salmonella science subspecies therapeutic vector virus