prostaglandin E2 (PGE2) was found in LBs from mouse macrophages infected with Mycobacterium bovis BCG, which causes bovine tuberculosis [3], or with the intracellular protozoan parasite Trypanosoma cruzi, the causal agent of Chagas' disease, a debilitating cardiac illness [7]; LTC4 was demonstrated in LBs from human eosinophils and basophils stimulated with the chemokines eotaxin/CCL11 and RANTES/CCL5 [43] and in eosinophil LBs from murine models of allergic inflammation [44], and LTB4in LBs from neutrophils and macrophages during sepsis [45]. Here, CCL11 is linked to Chagas disease.