Transcripts for CNN Wolf 20140407 17:30:00

tell your doctors you are taking xarelto before any planned medical or dental procedures. before starting xarelto, tell your doctor about any conditions such as kidney, liver, or bleeding problems. xarelto is not for patients with artificial heart valves. jim changed his routine. ask your doctor about xarelto. once-a-day xarelto means no regular blood monitoring -- no known dietary restrictions. for more information and savings options, call 1-888-xarelto or visit goxarelto.com. welcome back. i'm wolf blitzer reporting from washington. there are new developments that are raising hopes of finding malaysian airlines flight 370. here are some of the latest developments. search crews are following up on their most promising lead so far. a u.s. pinger locator in the indien indian ocean detected two separate signals.