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Flowchart of collection and processing of death biopsies associated with COVID-19. RT-PCR (Reverse-Transcriptase Polymerase Chain Reaction); ISH (in situ hybridization); IHC (immunohistochemistry); MO (light microscopy); IF (immunofluorescence); EM (electron microscopy); *(collected and discarded due to a negative RT-PCR result).
