Dr. George Papanicolaou: Inventor of the Pap Smear and Father of Modern Cytology.

The Pap smear is widely recognized in medicine as the single most successful contributor to cancer screening and preventative care. Women have Dr. George Papanicolaou (1870-1962) to thank for this groundbreaking contribution to their healthcare-a discovery that, fascinatingly, was made incidentally during his study of ovulation cycles in guinea pigs.