This is very old news. The use of the CaMV promoter in genetic modification has been standard practice since the 1980s. It's a wonder we are all not dead by now. These folks (below) tried to create a frenzy over it, back in the late 1990s. Why is this being resurrected now, one wonders?

Cauliflower Mosaic Viral Promoter - A Recipe for Disaster?
Mae-Wan Ho, Angela Ryan, Joe Cummins
Microbial Ecology in Health and Disease, 1999, 
Vol. 11, No. 4 : Pages 194-197

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