The first person to ever see a live cell with microscope was Antonie van Leeuwenhoek in the year 1657.
More about him:
Antonie van Leeuwenhoek was a Dutch businessman.
His discovery of the miniature organisms, then called as “animalcules”, lead to the establishment of completely new field of biology – Microbiology.
For his discovery, he is known as the ” Father of Microbiology”