gastroenterologist doctor, intestine specialist. aesthetic handdrawn highlighted of human intestine. neutral grey

acidophile aesthetic anatomy bacteria bowel cancer colitis colon colorectal constipation damage detox digestion digestive disease doctor drawing gerd hand healthy highlighted illustration immune indigestion internal intestine irritation lactobacillus large linear metabolic operation pain prevention probiotic recovery reflux small stomach symptom syndrome system ulcerative unrecognizable white woman