Countercurrent immunoelectrophoresis on cellulose acetate.

A technique for the detection and demonstration of antigens or antibodies by means of countercurrent immunoelectrophoresis on cellulose acetate (CAM) is described. The method is simple, sensitive and rapid. There is no need for preliminary preparation. The samples are contained in wells punched in the CAM. The equipment required is commonly available in routine laboratories, and the whole procedure can be performed and the results obtained within 90 min.