lactobacillus casei or lactic acid bacteria as probiotic. ai generated image

probiotic bacteria lactobacillus biological fermentation microscopic bacteriology bacterial science digestive bacterium healthy medicine health gut acidophilus microbiome casei medical yogurt colon enteric bowel overgrowth disease normal human digestion inflammation gasseri intestine lactobacterium rhamnosus milk microorganism micro organism benefit beneficial immunity lactic acid lacticaseibacillus casei