Marie Curie (1867-1934). Polish-French physicist who isolated polonium and radium from pitchblende ore, established the field of radioactivity, and won Nobel Prizes in two different sciences (Physics 1903, Chemistry 1911). The polonium isolation took four years of repetitive chemical separations conducted by hand in an unheated shed in Paris, processing tons of raw uranium ore. Curie's cognitive signature is the discovery specialty operating at full intensity over decades: monotropic focus on a single phenomenon, willingness to do years of physically grueling labor in pursuit of one research question, indifference to comfort or personal safety (she carried test tubes of radium in her pockets, used them as nightlights, and the contamination eventually killed her). The integration partner was Pierre Curie himself for the first decade — also a discovery-leaning specialist, but with stronger institutional networks — and after his death the integration work shifted to the international scientific community that had grown around the radioactivity research. Her daughter Irène and son-in-law Frédéric Joliot-Curie continued the work and won their own Nobel Prize in 1935. The lab became the team.