Growth of Bacteria on the Surface of Anion-Exchange Resin

The behavior of adsorbed cells on the surface of a resin was followed by electron microscopy by the carbon replica method. Cell division was not observed among adsorbed cells within 1 to 2hr after incubation in a growth medium, and cell density on the surface of the resin decreased slightly. After 2 to 6hr of incubation, adsorbed cells divided and the density increased at first but decreased later. The change in cell density on the resin surface was explained in relation to the change of cell concentration in the liquid part of culture reported in the previous report (1).