Who was the Sculptor and Scientist –created the Veiled Madonna, fisherman with marble net, and many more.?

Who was the Italian Sculptor and Scientist – created the Veiled Madonna, sculpture of the fisherman with a net of marble, and preserved the circulatory system of two individuals as statues using an unknown technique? It is thought he died from the effects of the chemicals he used. He was excommunicated for awhile. Can’t remember his darn name!