Detection of eosinophils in bone marrow of Schistosoma mansoni–infected wild-type and eosinophil lineage–ablated ΔdblGATA and TgPHIL mice. (A) Cells from bone marrow from S mansoni–infected mice, including wild type (BALB/c, C57BL/6), eosinophil lineage–ablated ΔdblGATA (BALB/c background), and TgPHIL (C57BL/6 background). Arrows indicate examples of eosinophils. (B) Percent eosinophils (± SEM) in bone marrow at t = 8 weeks after exposure to cercariae. Mice are infected (+) or uninfected controls (–), including wild types, and eosinophil lineage–ablated ΔdblGATA and TgPHIL as in panel A; n = 4 to 5 mice per group.