Figures 16–19. Lumpy skin disease, skin, calf No. 3, 11 days postinoculation. Transmission electron microscopy. Virions are present in large histiocytic-like cells (H, Fig. 16) and smaller fibroblast-like cells (F, Fig. 19). Immature particles (black thick arrow, Fig. 17), intracellular mature virions (white arrow), and brick-shaped intracellular enveloped virions (black thin arrow) are present in the cytoplasm of a large cell. Extracellular virions are also present (white arrow, Fig. 18). Scale bar in Figure 16 is 2 µm, Figure 17 is 1 µm, Figure 18 is 2 µm, and Figure 19 is 2 µm.