Table 3. Protective efficacies against heterologous challenge following drug treatment and 3 homologous re-infections^a.

Group	Parasite used for drug treatment and re-infection	Parasite used for heterologous challenge	No. of protected mice/total no. (%)
EXP6
G1	Pbb	Py	10/10 (100)
G2	Pyc	Pb	0/10 (0)
G3	NTd	Pb	0/5 (0)
G4	NT	Py	0/5 (0)

^a P. berghei- or P. yoelii-infected BALB/c mice were treated with Artemether®. The drug-cured mice were re-infected three times with homologous parasites at 4-week intervals. All mice survived these re-infections. The self-cured mice were then challenged with heterologous parasites.

^bPb, P. berghei ANKA.

^cPy, P. yoelii 17XL.

^dNT, neither drug-treatment nor infection.