1.The cause of psoriasis is unknown, although it appears to be an autoimmune disease with a likelihood for genetic predisposition。牛皮癬的原因尚不清楚，但它似乎是壹個與自身免疫性疾病的遺傳傾向的可能性。
2.Some diseases are presented by heredity。有些疾病是由於遺傳導致的。
1.The cause of psoriasis is unknown, although it appears to be an autoimmune disease with a likelihood for genetic predisposition。牛皮癬的原因尚不清楚，但它似乎是壹個與自身免疫性疾病的遺傳傾向的可能性。
2.Some diseases are presented by heredity。有些疾病是由於遺傳導致的。