Author's Organization:Microbiology Laboratory of Pilipinas Kao, Inc. Microbiology Laboratory of Pilipinas Kao, Inc. Microbiology Laboratory of Pilipinas Kao, Inc. Microbiology Laboratory of Pilipinas Kao, Inc. Microbiology Laboratory of Pilipinas Kao, Inc. Tochigi Research Laboratories of Kao Co. Tochigi Research Laboratories of Kao Co. Tochigi Research Laboratories of Kao Co. Tochigi Research Laboratories of Kao Co. Tochigi Research Laboratories of Kao Co.