... cedar elm硬叶榆 common elm大叶榆 elm(Ulmus)榆属；榆树 ...
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Conclusion: Elm, willow, poplar, milk, egg yolk and egg white were the common allergen in our area.
结论：本地区榆树、柳树、杨树、牛奶、蛋黄和蛋白是最常见的过敏原。
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