Melanotic encapsulation of P. cynomolgi Ceylon by A. gambiae. (A) Responses of individual parental L3-5 refractory strain (squares and circles) and 4Arr susceptible strain females (diamonds and triangles) to P. cynomolgi Ceylon infection. Exp.1 and exp. 2 indicate two separate infection experiments. (B) Responses of F1 female progeny from one cross between L3-5 females and 4Arr males (closed diamonds) and three crosses between 4Arr females and L3-5 males (open squares, circles and triangles).