Who first identified and isolated nucleic acids, the precursor to identifying DNA?

Question

What autism spectrum disorder was first identified in 1944 due to a study of children who lacked nonverbal communication skills, demonstrated limited empathy with their peers, and were physically clumsy?

Answer 1

Friedrich Miescher
In 1869 Miescher isolated nucleic acids from the nuclei of white blood cells. He did not immediately follow the discovery up, and Albrecht Kossel later made enquiries into their chemical structure.