Other scientists refute the claim, re: the vaccine as being toxic... it does its job and protects us. COVID attacks our organs though in a deadly way. That's why I have taken all three of the shots. The booster did give me a few side effects. Considering the alternative to being infected with COVID it was no big deal.
The read on the link is somewhat lengthy, but it has some definitive answers.
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Virus Spike Protein vs. Vaccine-Generated Spike Protein
The spike proteins from the virus and the ones generated by the vaccines are “essentially the same,” McLellan, the spike protein researcher at the University of Texas at Austin, told us, noting that they have the same function, structure and way of processing.
But, he said, there is “one key difference,” in that the spikes encoded by the vaccines “contain 2 amino acid changes that help stabilize the spike in its initial conformation and help prevent the spike from undergoing a conformational change that is required to facilitate membrane fusion.”
That’s because the SARS-CoV-2 spike protein is a
shape-shifter. To fuse its viral membrane with the host cell membrane it substantially changes its shape from an unstable pre-fusion state to a stable post-fusion state. While previously working on a vaccine for MERS, a disease caused by another coronavirus, McLellan and others
discovered that by adding two proline molecules to the spike protein, they could lock it into its pre-fusion state, triggering a more effective immune response and preventing cell entry. The
same harmless mutation, called 2P, as in two proline molecules, is
used in the SARS-CoV-2 vaccines.
During a SARS-CoV-2 infection, the NIAID told us, the virus spike proteins can latch onto human cells, allowing the virus to infect them. With the live virus, the protein “attaches to receptors on the surface of cells and fuses the viral membrane with the host-cell membrane,” McLellan said.
However, vaccine-generated spike proteins can’t do that fusion because they are locked in the pre-fusion shape.
“The spike protein encoded by the mRNA vaccines (Moderna and Pfizer/BioNTech) and the J&J vaccine instruct the cells in our arm (where the injection is given) to produce spike protein that is tethered to the surface of the cell. It is not secreted and thus does not float through the body,” McLellan said.
According to the NIAID statement, “the spike protein is only detectable for a few days after immunization” in tests conducted in animals.
COVID-19 Vaccine-Generated Spike Protein is Safe, Contrary to Viral Claims - FactCheck.org