[The effect of exocrine glandular tissue on the transplantation results of isolated islands of Langerhans].

Islet cells were transplanted into isologous rat strains with exocrine pancreatic tissue as contaminant. The relationship of transplant function to the degree of contamination was tested. No influence on transplant success was found despite a five fold amount of exocrine tissue in one group after transplantation into livers of diabetic animals. But a 12-fold contamination of the 2000 isolated islets of Langerhans did not allow a normalization of blood sugar content. The glucose assimilation coefficient was constantly below 1.0. Purification of islet cell transplants was estimated by determination of amylase activity per islet according to SUTHERLAND.