Chapter five, 'Metaphors in Science: Perspectives, tools, and other meta- metaphors', discusses the overall function of metaphor in cell biology. It may seem to exaggerate the role of metaphor, but at least for cell biology, metaphor can not only describe cells but also change their perceived character, and help researchers to observe and understand them better. This review gives a brief introduction and evaluation of I The Third Lens: Metaphor and The Creation of Modern Cell Biology i , which is an interdisciplinary endeavour that combines cognitive science and cell biology. [Extracted from the article]