First, mRNA COVID-19 vaccines are given in the upper arm muscle or upper thigh, depending on the age of who is getting vaccinated.
After vaccination, the mRNA will enter the muscle cells. Once inside, they use the cells’ machinery to produce a harmless piece of what is called the spike protein…. After the protein piece is made, our cells break down the mRNA and remove it, leaving the body as waste. Or, in other words, as we have long been told, “it” – the mRNA – “stays in the arm.” And then, after having instructed the muscle cells to produce the spike, is disposed of.
Far from “staying in the arm” and entering the muscle cells at the injection site, the injection site is only the point of departure for a journey that is supposed to take the mRNA rather to the lymph nodes. The subtitle of the slide is “Bringing mRNA to the right cells at the right places.” The deltoid is not the right place; the lymph nodes are. Once in the lymph nodes, a specific sort of cell, the dendritic cells, is supposed to manufacture the spike protein...<<<Read More>>>...