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There are a whole bunch of different CRISPR nucleases. From a variety of different organisms, with different Pam sequences and differing potential for off target cutting. Is Cpf1, better than Cas9? Good question. I don't know. It's certainly different a bit different but I don't know enough about it's advantages and disadvantage off the top of my head unfortunately.

Thanks for your opinion. I should cover CPF1 in one of my next articles. This is making some huge waves lately.

Sounds good, I look forward to reading what you have to report about it.