doctor hand with 3d render gut. microbiome concept, healthy gut bacteria

abdominal anatomy bacteria bifidobacterium body bowel colon contaminants crohn digestive disbiosis disease doctor enteric escherichia flora gastroenterologist gastroenterology gastrointestinal gut health healthy human ibd illustration immune infection inflammation inflammatory inner intestinal intestine intestines lactobacillus medical microbiome microbiota microflora pain probiotic render research science small stomach system woman