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.

Question: when was the theory first mentioned
Self-contained rewrite: when was cell theory first mentioned