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１对象和方法福建闽东地区三代直系血亲均为同一民族的畲族中小学学生１１３１名（男６２０，女５１１），年龄８～１８岁，对其足印进行划线法半定量评定。取８开双胶白纸，用１０％亚铁氰化钾溶液浸后晾干制成试纸，把１０％三氯化铁溶液浸透的纱布平铺在方盘内，令受检查者
1 Subjects and Methods Three generations of direct blood relatives in Fujian Fujian region were 1131 primary and secondary school students of the same ethnic group (male 620, female 511), aged 8 to 18 years old. Their footprints were screened for semi-quantitative assessment. Take 8 open double plastic white paper, with 10% potassium ferrocyanide solution after dipping to make test strips, 10% ferric chloride solution soaked gauze tiled in the square plate, so that the subjects