FIG. 2.

Reciprocal antibody titers in vaccinated monkeys. (A) Antibody titers to AMA1 in monkeys receiving AMA1either alone or in combination with MSP1₄₂. (B) Antibody titers to MSP1₄₂ in monkeys receiving MSP1₄₂ either alone or in combination with AMA1. Shown are individual titers (•), geometric mean titers (▾), and standard deviations (error bars). ELISA titers are expressed in arbitrary antibody units, calculated by reference to a standard Aotus serum against the plate antigen. A serum dilution of the reciprocal of the antibody units reported would give an approximate absorbance at 405 nm of 1.0.