[1] UNIV VIENNA,AKH,INST GEN & EXPT PATHOL,A-1090 VIENNA,AUSTRIA
[2] TECH UNIV CAROLO WILHELMINA BRAUNSCHWEIG,INST ZOOL,DEPT CELL BIOL,D-38106 BRAUNSCHWEIG,GERMANY
[3] ALBERT EINSTEIN COLL MED,DEPT BIOCHEM,BRONX,NY 10461
[4] SALZBURG UNIV,CTR APPL MOL ENGN,A-5020 SALZBURG,AUSTRIA