COVID-19(33) SARS-CoV‑2(25) Autopsy(17) material(17) SARS-CoV‑2(12) SARS-CoV-2(12) English(12) RNA(11) immunohistochemistry(10) Autopsies(10) Patient(10) severe COVID-19(8) Zytokin-Freisetzungssyndrom(8) CXCL9(8) CD163(8) lung(8) CD8-positive T‑lymphocytes(8) MZB1(8) CD8(8) Keimzentrum(8) Stat1(8) Analysis(8) CD68(8) CD8-positive T‑Lymphozyten(8) Germinal center(8) CD8A(8) PAK1(8) Cytokine release syndrome(8) Immunohistochemie(8) electron microscopy(8)