probiotics. restoring the gut flora. blue color. lactobacillus.

probiotics restoring gut flora blue color lactobacillus bacteria biology bacterium bacterial fermentation microbiology probiotic illustration microorganism bacillus acidophilus prebiotic biological health microbe healthy medicine icon 3d human medical background lactic yogurt yoghurt micro molecule intestine microscopic infection rodshaped colony sign acid disease grampositive symbol digestion contain label bifidobacterium bifidobacteria design cell intestinal