Should Peer Review Catch Fraud?

Is it the job of peer reviewers to detect scientific fraud?

I’ve been pondering this question for a while but lately my interest was sparked by the case of a retracted cancer biology paper in the high-profile journal Nature Cell Biology. Written by Taiwanese researchers Shih-Ting Cha et al., the article was published on the 15th August and retracted just three months later, after anonymous posters on PubPeer noticed several anomalies in the results.

For instance, there was image duplic

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