[1] HUNGARIAN ACAD SCI, BALATON LIMNOL RES INST, H-8237 TIHANY, HUNGARY
[2] UNIV TEXAS, MED BRANCH, DEPT PSYCHIAT, GALVESTON, TX 77550 USA
[3] UNIV TEXAS, MED BRANCH, DEPT BEHAV SCI & MICROBIOL, GALVESTON, TX 77550 USA
[4] UNIV MODENA, DEPT ANIM BIOL, I-41100 MODENA, ITALY
[5] UNIV MODENA, INST GEN PATHOL, I-41100 MODENA, ITALY
[6] INST PASTEUR, CTR IMMUNOL & PARASITOL, F-59019 LILLE, FRANCE
[7] YESHIVA UNIV ALBERT EINSTEIN COLL MED, DEPT ANAT & STRUCT BIOL, BRONX, NY 10461 USA
[8] YESHIVA UNIV ALBERT EINSTEIN COLL MED, DEPT NEUROSCI, BRONX, NY 10461 USA