diagnosis. it's harder to under go some of the therapies when you're older. but it happens. you remember jimmy carter he had med static melanoma and close to 90. under went therapy and has done very well. from the cancer standpoint. there's optimism certainly. it will be a tough road. >> yeah. and it struck me and other people, alex tremendobek had st and went through treatment. and has been prolonged his life and gone back to work. how personal is it in terms of treatment and what i'm getting at is some people react really well to a certain drug or protocol. how much does the each individual play into it? >> it is changing so quickly. it's a great question because we