TABLE 1.

Inhibitory effects of E. coli-expressed IFN on FMDV replication

Cytokine	Highest dilution that reduced FMDV plaque no. by 50% in:
	EBK cells	IBRS2 cells
Bovine IFN-α	1:8,100	1:3,200
Bovine IFN-β	>1:8,100	–a
Porcine IFN-α	>1:8,100	>1:8,100
Porcine IFN-β	1:1,600	1:4,050

^a–, less than 1:100.