of a woman and in doing so sd some lighthtn her own dispositn,nsaying a woman is like tea bag, you u nnotell her in hot watar. nancncreagan is saididodhaha redefined d e role of first lady. r r amalaly by h p voca. wwillouo whwheo fe ylulurugs? =lljust say no!% >> r reporter: as she gaveveoice to millions of americans. in 1987 shbrought breast cancerero the e refrfrt after s was diagnosed with e disease and defended her decisisi to have a mastectomy. >> maybe if i had been 20 years olololadn't been mried, , dn't had childrdr i iouldee colyiffent but i -- for me it was right reporteteollong predent reagan's 1994 diagnosisiwith alzheieir's disease, ncy w wt on to take vezy y blic stand 4 in suppo of stem cell research. sauer in 2005 about then-predentntush'oppopotionon to it. >> you c cld save millions`sf people's lives if yorely charged ahd wiwi stem cell -- hopefullll we will >> stilloping to p psuade him? >> well, you always hope. i t know. i s s, he -- heirmly believev his position i# thehe righghposotion.. and that fine. thth's- that's h belief. >> reporter:r:n 2009, nancy met t with pres