Yoshiki Matsuo Takashi Kubo Yasushi Okumoto Kohei Ishibashi Kenichi Komukai Takashi Tanimoto Yasushi Ino Hironori Kitabata Kumiko Hirata Toshio Imanishi Hideharu Akagi Takashi Akasaka

mehdi khaksari 1 1. dept. of physiology, school of medicine, shahroud university of medical sciences, shahroud, iran. sayyed hamid zarkesh-esfahani 2 2. dept. of immunology, school of medicine, isfahan university of medical sciences, isfahan, iran. masoud etemadifar 3 3. dept. of neurology, school of medicine, isfahan university of medical sciences, isfahan, iran. mohsen masjedi 4 4. dept. of immunology, school of medicine, isfahan university of medical sciences, isfahan, iran. roqayeh aliyari 5 5. dept. of biostatistics and epidemiology, school of public health, shahroud university of medical sciences, shahroud, iran. majid rahmati 6* 6. dept. of medical biotechnology, school of medicine, shahroud university of medical sciences, shahroud, iran.

Klaus Pantel