SLC40A1 and infection: This is exemplified by genes related to iron ion homeostasis such as the solute carrier family 40 member 1 gene (SLC40A1) [151], which was noted to be among the most divergent between trypanotolerant N’Dama and trypanosusceptible Boran as a result of a marked reduction in expression in the N’Dama population over the course of the infection experiment relative to the pre-infection level in PBMC [41].