Hao Xishan, male, Han nationality, is a native of Hebei province. He was born in 1945, and graduated from Tianjin Medical University. He is a professor of oncology at Tianjin Medical University. Hao studied oncological immunopathology in the U.S. and in Holland in 1980. During that period, he developed a new method to determine the content of interferon with radioimmunoassay as an objective index to measure the immunological function of the human t-cell. He also established a specific mouse t-cell line which could produce the related antigen to human intestines and stomach cancer.