Complex sentence: In the mid 1880s, Paul Ehrlich began to use methylene blue in his cell staining experiments that led to pioneering discoveries about different cell types; he won a Nobel Prize based in part on that work.
Split into simpler sentences: In the mid 1880s, Paul Ehrlich began to use methylene blue in his cell staining experiments that led to pioneering discoveries about different cell types. He was awarded a Nobel Prize based in part on that work.