In the experiment ,parakeratosis in piglets was suceessfully reproduced by feeding rations in which theratio of calcium to zinc was 330 to 1 or 516 to 1.
以钙：锌＝３３０：１与５１６：１的日粮饲喂健康断乳仔猪１２０天，复制了仔猪皮肤角化不全症。
A case of dyskeratosis congenita is reported and the family pedigree is also analyzed.
报告1例先天性角化不良并附家系调查报告。
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