Special lectures. Vascular complications in diabetes (Y Akanuma). HLA-DQ gene analysis and susceptibility to type I diabetes in chinese subjects (C. Yan, L. Wang, X. Hu). Type I diabetes in Japan (S. Nagataki). The inhibitory effects of baicalin, silybin and quercetin on aldose reductase and nonenzymatic glycation of protein in vitro and in streptozotocin-induced diabetic rats (J. Zhang et al.). Epidemiology. A survey of diabetes and impaired glucose tolerance in 44747 persons of Shanxi, Beijing and Liaoning, North China 1989 (X. Hong-ding, C. Zhi-sheng). A study on the mortality and prevention strategy of diabetic cerebral infarction (X.J. Li, L.Y. Huang, S.P. Deng). Clinical course and outcome of pancreatic diabetes due to chronic pancreatitis (H. Wakasugi, Y. Migita, S. Kubota). Pathogenesis. Free radicals and antioxidative enzymes in blood of patients with IDDM (F. Qiang, L.W. Shang, H.S. Zhai). Islet cell destruction and intracellular NAD reduction induced by cytokines and nitric oxide (C. Inada et al.). Macrophage function in non-obese diabetic (NOD) mice (M. Imamura, N. Aoki). The profiles of insulin-like growth factor binding proteins, IGF-I and IGF-11 in umbilical cord blood of newborns from diabetic mothers (T. Tetsuoh et al.). Glucose transporter expression in early postimplantation rat embryo and its regulation in the diabetic conditions (S. Akazawa et al.). Effect of islet amyloid polypeptide (amylin) on glucose metabolism and secretion of insulin in the rat (Q. Yu-ning, Q. Rong-ti). Glucocorticoids induce protein phosphorylation mediated by protein kinase C in rat adipocytes (M. Yamamoto et al.). Complications of diabetes mellitus. Characteristics of cerebrovascular disease in diabetic patients (Y. Kishi et al.). Nonenzymatic glycosylation of erythrocyte membrane proteins: With relation to chronic diabetic complications (Y. Guo-hua, N. Guo-zhu). Ultrasonographic detecting of residual urine in diabetic patients (M. Furuta et al.). Study on relationship between diabetic osteoporosis and related calcium regulating factors (J.W Qi, L. Liu). Morphometric study of platelets presenting large cross section from insulin dependent diabetes mellitus (Y. Xue, A. Xu). The comparison of urinary excretion of plasma proteins in diabetic nephropathy (S. Yamasaki, Y Tashiro, S. Egashira). Treatment. Early insulin therapy in non-obese NIDDM (K. Yamaguchi et al.). A preliminary study on maximal dosage of euglucon and clinical characteristics of patients with secondary failure to euglucon (Y Li et al.). Investigation of the hypoglycemic effect of bovine colostrum and its mechanism (M. Yu et al.). Factors related to general and particular knowledges after the diabetes education (S. Okada et al.). Index of authors.