Might be a good concept for a sci fi story actually, probably a comedic one. Scientists learn how to cure any disease and reverse aging, but only for mice. Conveniently for plot reasons, they also figure out how to turn people into mice and back. You can get any disease cured or become young again...but you have to spend three months as a mouse.

Fuck that, just implant those mice on my scalp.

To avoid rejection of the hair follicles, simply glue live mice to the top of your head.

Gonna need a Lotta mice

I take finasteride and my balls are functioning

Your instincts are correct. The approach in the paper is more complicated than this. Here is the abstract:

Abstract The success of cancer immunotherapies is predicated on the targeting of highly expressed neoepitopes, which preferentially favours malignancies with high mutational burden. Here we show that early responses by type-I interferons mediate the success of immune checkpoint inhibitors as well as epitope spreading in poorly immunogenic tumours and that these interferon responses can be enhanced via systemic administration of lipid particles loaded with RNA coding for tumour-unspecific antigens. In mice, the immune responses of tumours sensitive to checkpoint inhibitors were transferable to resistant tumours and resulted in heightened immunity with antigenic spreading that protected the animals from tumour rechallenge. Our findings show that the resistance of tumours to immunotherapy is dictated by the absence of a damage response, which can be restored by boosting early type-I interferon responses to enable epitope spreading and self-amplifying responses in treatment-refractory tumours.

LOL. ITER is not and has never been meant to be a fusion power plant. That would be DEMO.

Don't hold your breath.

https://en.wikipedia.org/wiki/DEMOnstration_Power_Plant

Fusion power will never, ever happen. Ever.