It is my glad pleasure to have got invited to do a research at Plasma Bioscience Research Center “PBRC”. During I was staying and doing a research work at Kwangwoon University. It was very good environment for doing a research. Many people, professors, research staffs and students were very kind and friendly. They always came to help and give some information that if it was in Korea. To did an experimental, we also did not do experimental alone, and we had a time for discussion and exchange our experience. That it is a good benefic and a challenge, when we can express our idea for a research. Because, it is helpful for step up of our research to the future. I would like to thank you PBRC and Kwangwoon University for give me my opinion to do a research in Korea. It is my good memorial for do a research of other country.