Serum blood collection tubes with separator gel are widely used by many laboratories for chemistry analyses. We describe a case of a primary blood collection tube filled with blood sample and a floating separator gel. The blood sample was collected from a 51 years old female in intensive care unit with the diagnosis of pneumonia into a BD Vacutainer SST tube (Becton Dickinson, NJ, USA)...
Small intestine: The part of the digestive tract that extends from the stomach to the large intestine.
The small intestine is a long and narrow tube about 6 to 7 meters (20 to 23 feet) long. Food completes its chemical decomposition in which a compound is split into other compounds by reacting with water in the small intestine with the help of the liver, pancreas, and intestinal glands who pour their secretions into it.