evidence: "The viruses are later harvested from the cell lines, and the vaccines are purified to remove any residual cells, ensuring they don’t end up in the final product. "The vaccines themselves are completely free of human tissue or cells." [...] "While it is therefore true that human cells (or cells of human origin) are used in the manufacture of these vaccines, these are grown in the lab and have been done so for a very long period of time," he said.