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地理学研究表明硒水平与癌症、大骨节病、克山病等的发病率呈负相关。人血的硒水平与地理环境密切相关,所以测定不同地区人体血硒含量是有意义的。1 血样的采集和方法 1.1研究对象 1989年6月至9月采集大连市193人(不同年龄)、鞍山市54人(A型血14人、B型
Geographic studies have shown that selenium levels are negatively correlated with the incidence of cancer, Kashin-Beck disease and Keshan disease. The selenium level of human blood is closely related to the geographical environment, so it is significant to measure the blood selenium content of human body in different areas. 1 blood samples collected and methods 1.1 research object June 1989 to September 193 people in Dalian (different ages), 54 people in Anshan (A blood type 14, type B