IFNG and infection: Similarly, in vitro recall responses of mesenteric lymph node cells (MLNCs) from T. muris-infected mice given either a high-dose (200 eggs, characterized by IL-13 production) or a low-dose infection (20 eggs, characterized by interferon-γ (IFN-γ) production) showed similar cytokine profiles after re-stimulation with E/S and E/S−p43, whereas p43 stimulation resulted in negligible cytokine secretion, confirming lack of CD4+ T-cell priming against p43 during infection (Fig. 4c, d).