Figure 3
From: Establishment of persistent infection with foot-and-mouth disease virus in BHK-21 cells
Electron microscopy (EM) observation of FMDV particles in BHK-Op cells. A total of 5 × 106 BHK-Op48 cells and BHK-21 cells infected acutely with FMDV (48 h.p.i.) were collected, fixed and prepared for EM observations. (A). The 48th passage of BHK-Op cells (BHK-Op48). The arrows point out the viral particles. (B). BHK-21 cells infected acutely with FMDV. The arrow marks the viral particles.