ATAD1 and malaria: Samples used for this comparison were: (1) pooled sera from rabbits immunized with a negative control Ag (reduced and alkylated MSP-1p42 (FVO)); (2) pooled sera from rabbits immunized with MSP-1p42 (FVO); (3) sera from normal blood banked US individuals; and (4) plasma or serum from malaria-experienced donors having high Ab titer against P. falciparum MSP-1 induced by natural exposure.