Final answer:
Paul Ehrlich is the individual who discovered the nature of Syphilis and was an advocate for biological tradition, contributing to the development of an effective treatment for syphilis with Compound 606.
Step-by-step explanation:
The individual who discovered the nature of Syphilis and was a champion of the biological tradition was none other than Paul Ehrlich. In the early 1900s, Ehrlich embarked on a journey to identify a chemical compound that could effectively target infectious diseases without harming the host. His efforts were rewarded when his assistant Sahachiro Hata discovered Compound 606, which was an antimicrobial agent that could cure syphilis. This groundbreaking compound was eventually marketed as Salvarsan. Paul Ehrlich's methodical approach to screening for antimicrobial agents was innovative and continues to influence the field of drug discovery today.