Long-Sought 'Attack' Signal in Type 1 Diabetes Identified

In people with type 1 diabetes, the body wages a ruthless campaign of destruction against certain cells in the pancreas because it mistakes them for foreign invaders. The cells that are destroyed, called beta cells, normally produce certain proteins in packages called exosomes. The new study found that, when the cells are in trouble, such as after an infection or other stressful event, these packages are decorated with chemical warning signals that may act as homing beacons that lure immune cell