3h 3min, jan 1, 1838 y - In 1838, one of his friends,
the botanist Matthias Schleiden,
published an article discussing
the structure and origin of plant
cells and theorized that all plant
cells share a common structure
and that new plant cells form
from the nuclei of old plant cells.
This article made Schwann
wonder if this could be true for
animal cells as well.