Schledin, Schwann, and Virchow. I do not know their first names so you will have to look them up.
He is a German scientist who studied cells.He made the cell theory.
Cell Theory
Schwann
cell theory
One significant scientist who made contributions to our understanding of cells is Robert Hooke. In 1665, he observed cork cells under a microscope and coined the term "cell." This laid the foundation for the cell theory, which states that all living organisms are composed of cells.
Cell Theory
James Watson
Theodor Schwan in 1839.He also contributed in building cell theory.
Schleiden and Schwann
Mendel
cell theory
Cell theory states that all organisms are made up of cell. Cell theory proposed by M.J.Schwann(1839)