The authors present the results of the research on the bile frcm gall-bladders of 40 cadavers and 23 additional gall-bladers removed by surgery. They examined the presence of fungi and bactéria as wéll as bile stones and crystals. A high incidente of bile crystals - 60% in gallbladders from cadavers was found. A low incidence of fungi was found - 2,5% in bile of gallbladders from cadavers and none in bile of surgically removed gallbladders. Bactéria was present in bile in 13% of surgically removed gallbladders and in 50% gallbladders from cadavers. There was a marked high incidence of gallstones in cadavers.