There is presently no method to stabilize the dose of mRNA inserted in the Lipid Nano-Particle. No quality control.
Likely the reason why some batches had most of the deaths and adverse Events.

Now the studies are being performed to determine how they can make them “Safe” and Effective in the future. They knew but went ahead anyway.

https://rumble.com/v37uugv-cancelled-vaccinologist-exposes-fraudulent-vax-data.html