IL-13 KO mice with EAM developed DCM with impaired cardiac function. A: Representative M-mode echocardiography of an IL-13 KO mouse at day 50 after infection. B: Representative M-mode echocardiography of a WT BALB/c control mouse. The hearts of IL-13 KO mice (filled bar, n = 10) had significantly increased LVEDD (C), LVESD (D), and significantly decreased %FS (E) and %EF (F), compared to WT BALB/c control mice (open bar, n = 10) at day 50 after infection of EAM.