Marie Curie theory of "radioactivity" (a term that she coined), techniques for isolating radioactive isotopes, and the discovery of two elements, polonium and radium. Under her direction, the world's first studies into the treatment of neoplasms were conducted using radioactive isotopes. She founded the Curie Institutes in Paris and in Warsaw, which remain major centres of medical research today. During World War I, she developed mobile radiography units to provide X-ray services to field hospitals. While a French citizen, Marie Skłodowska Curie, who used both surnames, never lost her sense of Polish identity. She taught her daughters the Polish language and took
Marie Curie (charity) for their carers. Marie Curie provides the largest number of hospice beds outside the National Health Service. Marie Curie Cancer Care was founded in 1948. When the Hampstead-based Marie Curie Hospital was transferred to the NHS, a group of committee members from the hospital decided to preserve the name of Marie Curie in the charitable medical field. This was the beginning of the Marie Curie Memorial Foundation − a charity dedicated to alleviating suffering from cancer today − today known as Marie Curie. Following the donation of an engagement ring to help raise funds for the charity, the very first