Who was Friedrich Meischer and what did he discover?

Friedrich Miescher was a Swiss physician and biochemist best known for his discovery of nucleic acids. In 1869, while studying the composition of cell nuclei, he isolated a substance he called "nuclein," which was later identified as DNA. Miescher's work laid the foundation for understanding the role of DNA in heredity and molecular Biology. His pioneering research was crucial in the eventual discovery of the structure and function of DNA.