Polymeric microspheres for immunoresearch

New microspheres having functional aldehyde groups have been prepared by radiation polymerization of acrolein solution containing hydroxyethyl methacrylate and glutalardehyde. The size distribution in the microspheres was narrow and average particle diameter was 1 - 2 micron. The binding ability of the microspheres to antigen increased by increasing the concentration of glutalardehyde. The preparation procedure of the microspheres is simple. The microspheres can be used for immunoresearch.