Fig. 4

Transmission EM of a thin section through the sediment of swab sample 7 (LR White rapid embedding). A A group of SARS-CoV-2 particles (arrows) in the extracellular space. Spike visibility is insufficient (compare also spike visibility of the same sample embedded in Epon resin, Fig. 3 B-E). B A cytoplasmatic membrane-bound inclusion (arrowheads) which is densely filled with coronavirus particles. Scale bar in A = 100 nm, in B = 200 nm