In line with prior reports indicating that cardiac damage induces a lymphangiogenesis response in association with production of the lymphangiogenic factor Vegfc (9), we also found increased expression of typical lymphatic vascular markers such as lymphatic vessel endothelial hyaluronan receptor 1 (LYVE1) (Supplemental Figure 1B) and Prox1Td-tomato (Supplemental Figure 1C) in myocardial lymphatic networks following MI. The gene discussed is VEGFC; the disease is myocardial infarction.