TABLE 1.

Effects of Pg and uPA on M. fermentans adherence to and invasion of HeLa cells^a

M. fermentans prepn	Adherence to HeLa cells (cpm/106 HeLa cells)	Invasion of HeLa cells (CFU/106 cells)
Native	2,450 ± 250	250 ± 150
Pg treated	9,800 ± 550	560 ± 250
Pg and uPA treated	9,200 ± 600	4,500 ± 1,100

^aM. fermentans was treated with 25 μg of Pg per ml or with Pg (25 μg/ml) and uPA (100 u/ml) for 30 min at 37°C. HeLa cells were then infected with the M. fermentans preparations at a multiplicity of infection of 100, and invasion was determined after 3 h of incubation at 37°C