chris hansen, nbc news, detroit. >> much more from detroit in a special dateline, "america now: cityf heartbreak and hope" coming up at 7:00, 6:00 central. that's "nightly news" for this sunday. brian williams will be here tomorrow. i'm lester holt reporting from new york. for all of us here at nbc news, good night.

the case has the support of nearly the entire medical establishment that deals with genetics. >> chris hansenall of those people are saying, "the patents in this case hurt women's health." >> safer: hansen says that myriad's patents are unconstitutional and should be invalidated. >> hansen: there's a longstanding patent law doctrine that says you can't patent the laws of nature and products of nature and abstract ideas. and that's what happens when you patent genes. >> safer: but what was the rationale of the patent office in approving this? >> hansen: that isolating and purifying the gene is so transformative that it makes it a different thing. >> safer: but it's still not an invention? >> hansen: they would say that by taking it out of your body and stripping away some of the pieces, they... it's no longer a product of nature. it's now an invention. we think that's nonsense. if myriad develops a new drug, a new treatment, a new test, they can get a patent and they should be able to get a patent. what they shouldn't be able to do is get a patent over the gene itself. >> safer: lisbeth cerian

chris hansen. like many of his generation, mr. says he moved to detroit from the south for a factory job with ford. how has this neighborhood changed? >> oh, man, changed a whole lot. and it just -- this hurts me to look at it. >> reporter: why do you stay? >> i don't want to stay. my wife is keeping me here. my wife. >> reporter: what's the saddest thing you see when you look around the city? >> how people's tearing up things. >> reporter: and what's the best thing about this city for you? >> i don't know. what about it, duke? what the best? >> it -- the best is all gone. >> reporter: the best is all gone you say. >> the best is all gone. >> reporter: for their generation, an auto job guaranteed good pay and benefits for life. and you didn't need a college degree. and that's what tom douglas was counting on. thanks to his desk job at ford, he bought this house in the suburbs. >> ford was very good to me and my family. >> reporter: 19 years? >> yes. yes. it opened doors that i had never imagined. life was good. >> reporter: michig