Hearts perfused as described in Fig 4. (A) Representative detection of I/R-induced apoptotic cells by TUNEL (green), and of all the cells by Propidium Iodide (PI, red), in heart sections of the following conditions: control, ischemia/reperfusion (I/R), netrin-1 treated I/R, netrin-1/DCC I/R, netrin-1/U0126 I/R or Netrin-1/L-NAME I/R; (B) Grouped data from three independent experiments. *p<0.001 vs I/R control, **p<0.05 vs netrin-1.