Table 1.

Effect of cathepsin inhibitors on production of infectious NiV^a

Inhibitor	Virus titer (TCID50/ml)
	Vero cells	MDCK cells
Control	4 × 105	1.2 × 104
CatLIII (20 μM)	2.5 × 102	1.5 × 104
NS134P (10 μM)	4.5 × 105	7 × 102
CatLIII + NS134P	<2 × 102	<2 × 102

^aVero and MDCK cells were infected with NiV at MOIs of 0.2 and 0.5, respectively. After 1 h virus adsorption at 37°C, cells were washed to remove input virus and then further incubated with the indicated inhibitors. At 24 h p.i., virus titers in the supernatant were determined by the TCID₅₀ method.