gastrointestinal medicine, digestive system and colon cancer concept with close up on a medical model of the large intestine or

abdomen abdominal anatomical anatomy belly biological biology black body bowel cancer closeup colic colon concept contrast dark darkness digestion digestive disease dramatic education gastrointestinal gut health high human inside internal intestinal intestine intestines large light lighting medical medicine model moody muscle organ pain physiology plastic research science side stomach system tissue