[1] UNIV ROSTOCK, INST IMMUNOL, DDR-2500 ROSTOCK, GERMANY
[2] UNIV ROSTOCK, INST BIOCHEM, DDR-2500 ROSTOCK, GERMANY
[3] UNIV ROSTOCK, INST PATHOL, DDR-2500 ROSTOCK, GERMANY
[4] CZECHOSLOVAK ACAD SCI, INST MOLEC GENET, CS-11142 PRAGUE 1, CZECHOSLOVAKIA