Table 1. Inhibition of intraerythrocytic parasite development.

Inhibitors	IC50 a (µM)
E64	7.6 ± 1.22
Epoxomicin	0.0077 ± 0.00027
Lactacystin	0.276 ± 0.038
MG132b	0.0476 ± 0.0058
Pepstatin	74.3 ± 8.8

^a Mean IC₅₀ with standard deviation from three independent experiments, each in duplicate.

^b The IC₅₀ for PBMCs was 10.8±0.04 µM.