presentation2 Can you check and correct my English? There is another key person. Kiyoshi Shiga, foreign student from Japan, came over to labo in Germany. Shiga studied a sampling method of Shigella in pupils of Kitasato which was a famous bacteriological researcher. Paul decided to study an effective pigment agent with Shiga. At first, he ordered the animal experiment using the mouse to Shiga. The sleepy sickness in Africa is infected a person by a fly. Patients distracted and fall into a coma, and finally die by trypanosome which is a pathogen. So Kiyoshi decided to look for a pigment to specifically counter trypanosome.