annick desjardins showed her how it went. >> desjardins: so we can exactly see where the polio viruse m.r.i. you and i looked at on monday. then, you see here the brighter area there? can you see that? >> nancy justice: yes. >> desjardins: that's the polio virus. >> nancy justice: wow. >> desjardins: exactly where we needed it. >> nancy justice: oh. cool. okay. >> desjardins: right where it should be. >> pelley: in a few months they'll take another m.r.i. to see which is stronger, glioblastoma or polio. >> henry friedman: the number of calls are increasing. >> pelley: this is duke's polio team. as usual in such studies several of them have a financial stake, so they'll benefit too if it becomes commercial. can you pick out the deputy director of the brain tumor center? well, when you're one of the world's leading cancer doctors turns out you can wear what you like. and after 34 years, folks at duke are used to how dr. henry friedman's brain views fashion. >> friedman: it's really good to see that things are going well. >> pelley: it was friedman who encouraged nancy justice to gamble

our lisa desjardins reports on what changed today. >> reporter: the numbers tell this unusual story. see those "yes" votes to fund homeland security with no strings attached, there on the left, those came mostly from democrats. only a minority of republicans, like idaho's mike simpson, joined those democrats. those republicans argued the battle over the president's actions which allowed more undocumented immigrants to stay in the country, that battle will have to wait. >> congress must continue the fight, fight the president's actions on immigration that i do not support and the american people do not support. we must continue this fight, but we must also allow funding for critical security functions to move forward. >> reporter: that's the split. dozens of other g.o.p. conservatives, like raul labrador, also of idaho insisted the president's actions are so egregious, that republicans should use all their leverage. >> this fight today is not about immigration. this fight today is about the separation of powers. any person who votes for this deal today is voting to cede some of our po

lisa desjardins thanks. >> woodruff: next, the risk of concussions in sports and trying to lower those odds. san francisco 49ers linebacker chris borland shocked the football world yesterday by announcing his decision to retire from the game after a strong rookie season. borland, who is 24 years old and was expected to earn more than a half-million dollars next season, told espn's "outside the lines" he was concerned about head trauma from repeated hits. >> it was just the realization i just started my professional career. am i going to go down this road? am i going to commit the prime of my life to something that could ultimately be detrimental to my health? that just kind of triggered my thinking and changed the way i viewed the risks. >> woodruff: borland becomes the most prominent player to leave the game in his prime based on those risks. but worries are growing among many parents of younger athletes and kids playing sports. researchers are looking into whether electronics can make sports safer. hari sreenivasan reports on new innovations for brain safety on the playing field, par

newshour political editor lisa desjardins is in indiana this week, where there's been an uproar over the religious freedom restoration act or r.f.r.a. that many claim will allow businesses to discriminate against gays and lesbians. indiana'sgovernor tried to answer critics this morning. >> let me say first and foremost: r.f.r.a. was about religious liberty, not about discrimination. as i said last week had this law been about legalizing discrimination i would have vetoed it. >> reporter: indiana governor mike pence took 37 minutes to try and roll back five days of questions about whether he signed an anti-gay law. >> i abhor discrimination. i was raised with the golden rule, you should do unto others as they should do on to you. >> reporter: as the indiana republican aimed to define his new law as not discriminatory. hoosiers were at lunch, and less certain about how to digest their governor's words. >> he still hasn't said what he's going to do. >> reporter: the news conference played on tv's usually reserved for football or music videos at ollie's sports bar in indianapolis. >> i t

desjardins wanted to go back to traditional treatment but stephanie decided against her advice to wait, five months after her infusion and mri showed that the tumor hadn't been growing at all, it turned out it only looked worse because it was inflamed. stephanie's immune system had awakened to the cancer and gone to war. why didn't the immune system react to the cancer to begin with? >> so cancers -- all human cancers, they develop a shield or sh rould of protective measures that make them invisible to the immune system, and this is precisely what we try to reverse with our virus. so by infecting the tumor, we are actually removing this protective shield and telling -- enabling the immune system to come in and attack. >> so essentially what's happening here inside the tumor is you have a polio infection. >> yes. >> and that sets off an alarm for the immune system. >> yes. >> the immune system says there's a powe owe infection, we'd better go kill it. >> yes, exactly. >> and it turns out to be the tumor. >> yes. >> reporter: it appears it's the polio that starts but the immune system do

. >> the sharks made four deals before the deadline, trading away andrew desjardins shepherd.ut the general manager hopes it jump starts a team that's lost five of its last six. >> if anybody is happy about the inconsistency we've played, they shouldn't be. a couple years ago we weren't playing very well either. it was the same thing. you've got to respond and go out on the ice and play the way you're capable of. >>> andrew bogut and the warriors in brooklyn. final stop of the six-game road trip. the big men had plenty of energy early on. bogut had a season high 16. oh my. brooklyn has pretty good big men of their own. brook lopez takes two of his 26. nets led by 10 with 4 minutes to go but then steph curry woke up. knocks down one of his six 3s. curry has 18 counting in the 4th. can i have a live update please? oh brooklyn has just won 110-108. apparently jarrett jack beat the warriors. >>> if you were shooting video of the snow in arnold with an iphone in one hand and the other on the wheel here's what you missed. cleanup on aisle 1. have a nice trip. see you next fall. nasc

desjardins will be the leader, the organizer. there will be an assistant and the investigatory work structured around three groups who will look for information on more specific things. one group will look for aircraft, everything on the history of the aircraft, maintenance and its condition. another group will work on the systems on board and on the ground. and that's where all the work will be done with the recorders. and then a group will look at operation, the way in which the aircraft was operated. i've put here on the right a reminder that this organization involves various people who are not have b.e.a. but from our colleagues, the bfu, germany and ciaiac spain. so there are investigators from those two bodies who will be integrated into these investigation groups and also the technical advisers that i mentioned will take part in the investigations. a few words on the site of the accident, here's a general photograph. you may have seen others already. what do we see here? well, mountains, very rugged, very difficult for ac

newly acquired ben smith arriving to the tank hours before he was traded from chicago for andrew desjardins. he made a friend and deflected mark eduardo vlasic's shot. for the first goal in teal. 1-0. and then alex stalock brilliant. but bret burns kept that shut- out by getting the stick in front of the puck before it crossed the line. 20 saves for stalock and the sharks win 4-0. >>> hey, padraig harrington won on the pga tour yesterday. he beat a rookie in that one and the 49ers saw an australian rugby star jarryd hayne who left millions down under to try to become a 49er for $100,000. coming to levi's stadium possibly. rugby? i'm dennis o'donnell, have a great day. >>> play of the day now. nhl predators and rangers. watch. >> held in by santorelli. knocked down on his knees there and the score by tulloch. taylor -- >> nashville's taylor beck with a nice little pass to matt cullen who caps it and goes -- scoops it and goes top shelf. the predators' only goal of the game however. rangers got four. and they're big winners but the predators got the play of the day. what's more important mich