This study asserts that the mRNA and the spike protein produced persists for weeks in lymph node germinal centers in human patients. Immunohistochemical staining for spike antigen in mRNA vaccinated patient LNs varied between individuals, but showed abundant spike protein in germinal centers 16 days post-2nd dose, with spike antigen still present as late as 60 days post-2nd dose. Having worked with mRNA for decades, I can attest that this is highly unusual.
