FIG. 8.
Transmission electron micrographs demonstrating BMEC injury caused by S. suis at 108 CFU/ml. Panels: A, suilysin-producing strain 31533; B, non-suilysin-producing strain 89-1591; C, no-bacterium control. BMEC integrity after a 2-h incubation with strain 89-1591 (B) was comparable to that of the no-bacterium control (C).