Esophagogastroduodenoscopy (EGD) is a diagnostic procedure that allows the physician to diagnose and treat problems in the upper gastrointestinal (UGI) tract. The doctor uses a long, flexible, lighted tube called an endoscope. The endoscope is guided through the patient's mouth and throat, then through the esophagus, stomach, and duodenum (first part of the small intestine). The doctor can examine the inside of these organs and detect abnormalities.
Onions are transported in wide-meshed jute fabric or plastic bags, crates, boxes, cartons, baskets or fruit crates. Small-meshed bags are unsuitable for transport due to their low permeability to air.
This process acts as a buffer to prevent iron overload. Iron transported in blood by transferrin is always in the ferric form. Once released into body tissues, the iron is changed (reduced) to the more active ferrous form. Iron that is bound to ferritin, on the other hand, is transported primarily to the main storage sites, the liver and the spleen.