1. Department of Host Defence, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585,1
2. Institute of Skin Sciences, Club Cosmetics Co., Ltd., Nishi-ku, Osaka 550-0005,2
3. Department of Microbiology and Immunology, Aichi Medical University, Aichi 480-1100,3
4. Department of Chemistry, Faculty of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585,4 and
5. Japan BCG Laboratory, Aichi-gun, Kiyose, Tokyo 204-0022,5 Japan