人体的血小板第4因子具有调节造血于细胞增殖和耐药反应的生物活性，并能减低治疗恶性肿瘤时放疗和化疗对造血于祖细胞的损伤。近日在天津通过专家鉴定的这一新的发现，是中国医科院血液学研究所血液病医院韩忠朝教授等人10余年的研究成果。韩忠朝教授等人研究发现，血小板第4 Human platelet factor 4 has the biological activity of regulating hematopoiesis in cell proliferation and drug resistance, and can reduce the damage of hematopoietic progenitor cells by radiotherapy and chemotherapy when treating malignant tumors. The new discovery passed by experts in Tianjin recently was the result of more than 10 years of research conducted by Professor Han Zhongchao of the Hematology Hospital of the Chinese Academy of Hematology. Professor Han Zhongchao et al. found that platelet No. 4