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由于易出现过敏反应，使用前必须做皮内试验。
But for allergic reaction, skin test must be done before using.
youdao
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目的探讨儿童变态反应皮内试验特点。
Objective To explore the characteristics of children allergic hypodermic test.
youdao
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目的探讨儿童变态反应皮内试验特点。
Objective To explore the characteristics of children allergic hypodermic test.
youdao