Once radiopharmaceuticals enter the body and travel to an organ, they begin to interact with the processes of that organ. The radioactivity is picked up by cameras or computers and used to map the process. For example, an ultrasound can show an image of an organ and reveal if a tumor or other abnormality is present. Nuclear medicine can show how the process of glucose metabolism is functioning in the organ.
250g bags of our biltong can last up to 4-months, and we have food testing certificates to prove this, however, we do not advise that you keep it that long. The larger the bag of biltong, i.e 500g or 1kg, the more moisture is contained within the sealed bag.
Even properly refrigerated liquid formula should be used within 48 hours; if you've made a batch from powdered formula, you should use it within 24 hours. Remaining powdered formula should be used within a month after opening. Any formula left in the bottle an hour after your baby has started feeding should be discarded, so try not to fill the bottle with more than he usually takes. And as with any food, particularly one meant for a baby: When in doubt, throw it out. Contributing editor Heidi Murkoff is the coauthor of the bestselling What to Expect When You're Expecting (Workman) and the author of the What to Expect Kids series of children's books (HarperCollins).