An example of a metaphor used in science writing:
"Even though the red cell is limited in its arsenal of metabolic capabilities, it manages, at the price of high levels of glucose consumption, to generate sufficient ATP and reducing power to preserve the normal lifespan of the red cell."
Benz, Edward J. (2018) Anemias, red cells, and the essential elements of red cell homeostasis, in Edward J. Benz, Nancy Berliner, & Fred J. Schiffman, Anemia. Pathophysiology, Diagnosis, and Management, Cambridge University Press, 1-13.