Fig 3. Detection of SARS-CoV-2 RNA in tissues by RT-PCR and ISH.

Tissues where viral RNA was not detected (ND) or not tested (NT) by RT-PCR are present below the lower horizontal black line. Circles represent samples that were SARS-CoV-2 tested by RT-PCR, and SARS-CoV-2 RNA was not detected by ISH in FFPE. Triangles represent samples that were SARS-CoV-2 tested by RT-PCR, and demonstrated positive detection of SARS-Co-2 RNA by ISH. Diamonds represent samples that were not tested (not available) by RT-PCR, and SARS-CoV-2 was positively detected by ISH on FFPE tissue. Squares represent samples in which SARS-CoV-2 tested by RT-PCR, however FFPE tissues was not tested (not available) for ISH. Stars represent cases in which tissue was unavailable for both SARS-CoV-2 RT-PCR and ISH.