Abnormal sensitivity to glucose of human islets cultured in a high glucose medium: partial reversibility after an additional culture in a normal glucose medium. - Davalli,A.M.; Ricordi,C.; Socci,C.; Braghi,S.; Bertuzzi,F.; Fattor,B.; Carlo,V.D.; Pontiroli,A.E.; Pozza,G. (J Clin Endocrinol Metab, 1991)