“…(For studies of vessel pathFrom the Department of Medicine, Aalborg Municipal Hospital, Aalborg, Denmark. ology of the peripheral nerves see Fagerberg 1 ; heart, Blumenthal et al 2 ; skin and muscles, Goldenberg et al, 3 Aagenaes and Moe, 4 Pedersen and Olsen, 5 Handelsman et al, 6 Zacks et al, 7 McMillan et al, 8 Bencosme et al, 9 Siperstein et al 10 ; bulbar conjunctiva, Funahaski and Fink, 11 Pieri and Scarpelli 12 ; inner ear, J0rgen-sen 13 ; mucosa of the stomach, Angervall et al 14 ; pancreas, Lazarus and Volk 15 ; gingiva, Stahl et al 16 ; placenta, Burstein et al 17 ; retina, Ashton, 18 Bloodworth 19 ; kidney, Thornsen. 20 ) During the past few years, it has been possible with electron microscopy to detect nonspecific structural changes very early during the disease and possibly even before the onset of clinically detectable diabetes.…”