Within the past several years, a number of powerful genetic and genomic tools have been developed for use in research on the African malaria vector Anopheles gambiae. While these tools have been developed with a broad range of potential applications in mind, they have been particularly useful in advancing the effort to clone a set of An. gambiae genes that enable a refractory strain of this mosquito to encapsulate and kill a wide variety of different malaria parasites to which this mosquito is normally fully susceptible. This paper describes the latest progress in this map-based cloning research, which involves the collaborative contributions of a number of different laboratories in Europe and the United States.