evidence: A number of reports have flagged that the SARS-CoV-2 spike protein may be toxic even on its own -- say if released as debris from a shattered viral particle. Contact with the spike protein appears to damage endothelial cells, which line every blood vessel in our body, including hundreds of billions in our lungs. If spike proteins are toxic, wouldn't a vaccine that causes our cells to make them be toxic, too? Could the mRNA vaccines directed at SARS-CoV-2 trigger a deluge of that protein into the bloodstream, where it could wreak havoc with heavily vascularized organs such as the heart, intestine and, of course, lungs? [...] Recall that the COVID-19 vaccine's cargo is a bunch of mRNA strands that, once safely inside a cell, direct the production of a whole lot of a single substance: the spike protein. Once produced inside a vaccine-recipient cell, it has no escape accomplices (the other components of the viral structure) to latch onto, because the cell isn't making them. So, it has no dependable passage out of the cell. Instead, Davis told me, the vast majority of vaccine-induced spike proteins float or are carried, either intact or sawed into snippets by enzymes inside the cell, to the cell's outer membrane. There they get stuck, right where the immune system can most easily spot them and mount a coordinated response.