摘要： Chloroquine(CQ)solution was separately mixed with the sera of mice infected with chloroquine-resistant‘NS’line(SMNS),the sera of mice infected with chloroquine-sensitive Plasmodium bergheiANKA strain(SMCS),and the sera of normal mice(SM)These mixtures were then used in treatingmice inoculated with P berghei ANKA strain.The results obtained on d 5 after drug-serum adminis-tration showed that the erythrocyte infection rates in the SMNS+CQ,SMCS+CQ,and SM+CQ groups