George Papanicolaou / Pap test

Dr George Papanicolaou, founder of Cytology speciality, has been one of the most eminent doctors of the 20th century. His long-term studies on vaginal smear and the detection of the atypical cells that exfoliate from the vagina, resulted in the invention of Pap-test.
This test ensured the early diagnosis of vaginal cancer and the salvation of millions of women worldwide.