None was positive in 60 normal individuals.
检测正常人血清60份，未见阳性反应。
Normal individuals will cool the skin and may experience some skin mottling on cold exposure.
正常人遇冷后，皮肤将发凉，可有一些皮肤呈斑点状。
Normal individuals will cool the skin and may experience some skin mottling on cold exposure.
正常人遇冷后，皮肤将发凉，可有一些皮肤呈斑点状。
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