this week s fit nation looks at a blind rock climber. cnn s sanjay gupta has the story. i got to interrupt on a rock the way very few people get to experience. climbing has taught me to navigate the world in a different way. justin solis is a professional rock climber, he s also legally blind. being a young teen boy and losing your vision is one of the hardest things i could have imagined. i was about to get my learner s permit. reporter: despite years of tests, doctors couldn t determine the cause of his vision loss. i spent two or three years not doing anything at all. until a friend at a local gym told me i didn t need to see to rock climb and i was hooked. reporter: justin can t see straight ahead. he relies mainly on his
down the right path. exactly how the treatment works is complicated, but nick is pretty good at explaining it, actually. they took out t-cells out of my body and then they engineered them to track down the cancer cells and kill them off. did they get them? i hope so. upon i m feeling good now, so i think they did pretty well. watch as this gray cancer-killing zealot left attacks the green cancer cell which gets smaller and eventually dies. upon. doctors tried this in 59 patients. 25 are now cancer-free. our hopes are that eventually we ll, you know, he will be cured that he can kind of put aside this and start moving forward. i just want him to be able to enjoy a normal kid s life. his biggest thing right now is he is looking forward to getting his learner s permit. and soon, instead of playing with toy cars john will get the chance to teach his son how to
i m feeling good now. i think they did pretty well. watch as this gray cancer killing cell on the left attacks the green cancer cell which gets smaller and eventually dies. doctors tried this in 59 patients, 25 are now cancer-free. our hopes are eventually he will be cured. he can put aside this and start moving forward. i just want him to be able to enjoy a normal kid s life. his biggest thing right now is he s looking forward to getting his learner s permit. soon, instead of playing with toy cars, john will get the chance to teach his son how to drive a real one. you went from having cancer to now they can t even find it. how does that feel? really great. here with me now is my good friend senior medical correspondent elizabeth cohen. these are patients for whom nothing else worked. is there some way to
they took out t-cells out of my body and engineered them to track down the cancer cells and kill them off. reporter: did they get them? i hope so so i think they did pretty well. reporter: watch as this gray cancer killing cell on the left, attack the green cancer cell, which gets smaller and actually dies. doctors tried this in 59 patients. 25 are now cancer free. our hopes is he will be cured and he can put aside this and start moving forward. i just want him to be able to enjoy a normal kid s life. reporter: his biggest thing right now is he is looking forward to getting his learner s permit. and soon instead of playing with toy cars, john will get the chance to teach his son how to drive a real one. you went from having cancer to now they can t find it. how does that feel? really great. absolutely remarkable.
reporter: watch as this gray cancer-killing cell on the left attacks the green cancer cell which gets smaller and eventually dies. doctors tried this in 59 patients, 25 are now cancer free. our hopes are that, you know, eventually, you know, he will be cured that, you know, he can kind of put aside this and just kind of start moving forward. i just want him to be able to enjoy a normal kid s life. his biggest thing right now is he is looking forward to getting his learner s permit. reporter: and soon, instead of playing with toy cars, john will get the chance to teach his son how to drive a real one. you went from having cancer to now they can t even find it. how does that feel? really great. and here with me now is my good friend senior medical correspondent, elizabeth cohen. these are patients for whom nothing else worked. is there some way to characterize what this offers them? right. you know, these patients had relapsed before, nicholas, had