Conversation so far:
what is one exception to the cell theory
Viruses are an exception to the cell theory because although they can replicate and adapt to the environment, they do not have the basic components to live on their own.
what is cell theory
Cell theory states that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells.
is cell theory widely accepted
Cell theory is now universally accepted.
when was cell theory first mentioned
In 1839, Matthias Jakob Schleiden published Microscopic Investigations on the Accordance in the Structure and Growth of Plants and Animals, which included the first statement of the cell theory.

Question: what was the statement
Self-contained rewrite: what was the first statement of the cell theory as mentioned in Matthias Jakob Schleiden's Microscopic Investigations on the Accordance in the Structure and Growth of Plants and Animals“