IL4 and myocardial infarction: Mechanistic studies showed that exacerbated cardiac dysfunction post-MI in EOS-deficient ΔdblGATA mice can be fully recovered by giving mice EOS cationic protein mEar1 (mouse EOS-associated-ribonuclease-1) or adoptive transfer of EOS from WT mice, but not those from IL4-deficient (Il4–/–) mice, suggesting a role for EOS-derived mEar1 and IL4 in repairing cardiac injury.