Mr. Meyer, German and American researchers recently published a preliminary study on a preprint server, according to which the corona virus undoubtedly originated in the laboratory. The headlines were not long in coming. But neither does the criticism from experts. Can you explain what this work is about? The authors say they discovered a kind of "fingerprint" that can be left behind when you construct a virus yourself. These artefacts are said to indicate genetic manipulation.

What does that mean? Put simply, the authors believe the virus was cut open, altered, and glued back together. And that at so-called restriction sites.

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