CELL THEORY

Principle that all organisms are composed of one or more cells. Proposed in 1839 by Theodor Schwann for animals and by Matthias Jakob Schleiden for plants.

CELL THEORY: "Cell theory indicates that living things have one or more cells."
Cite this page: N., Pam M.S., "CELL THEORY," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/cell-theory-2/ (accessed April 19, 2021).
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