Sewage waste is routinely frozen and archived.

监考老师 · 2020-06-26 15:39:40Z

Sewage waste is routinely frozen and archived.简介

来源: 监考老师于 2020-06-26 15:39:40 [档案] [旧帖] [给我悄悄话] 阅读数 : (45 bytes)

本帖于 2020-06-26 15:40:57 时间, 由普通用户监考老师编辑

回答: How does the study find the virus exist in Spain in 3/2019? 由 voiceofme 于 2020-06-26 13:27:09

Virus found in old frozen samples.

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