Question: when did zacharias janssen make a discovery related to the cell theory
I found the following answer on Google: Zacharias Janssen (also Zacharias Jansen or Sacharias Jansen) (b.1580-88, d.pre-1632 to 1638) was a Dutch spectacle-maker from Middelburg associated with the invention of the first optical telescope .
Is that a correct answer? Yes or no.
