Researchers at Berlin's Charite hospital and medical school say tests on his bone marrow, blood and other organ tissues have all been clean.
柏林查理特医院和医学院的研究者说,测验表明,他的骨髓、血液以及其他器官组织都是干净的。
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It has not come, and researchers at Berlin's Charite hospital and medical school say tests on his bone marrow, blood and other organ tissues have all been clean.
However, a direct cause-and-effect isn't clear, said the team at the Charite Universitatsmedizin Berlin and of the Physikalisch-Technische Bundesanstalt (PTB), the German National Metrology Institute.