The Shraga Segal Department of Microbiology;
Immunology and Genetics;
Faculty of Health Sciences;
Ben-Gurion University of the Negev;
Beer-Sheva;
Israel;
Department of Obsteirics;
Gynecology and Reproductive Sciences;
Univeisity of Pittsburgh School of Medicine;
Magee-Womens Research Institute;
Pittsburgh;
PA 15213;
USA;