Marie Curie did something with isolating radioactive isotopes.
In fact she died due to aplastic anemia brought on by radiation poisioning. She had developed mobile x ray units for WWI and I guess not used lead vests.
Her husband, while crossing a street, was struck by a horse drawn wagon and killed. He didn’t live long enough to develop symptoms.
Eve Curie wrote a biography of her mother. It is excellent. I recommend it.
http://www.amazon.com/Madame-Curie-E/dp/2070373363
Got that, thanks - was just thinking of the original invention/discovery.