natural killer cells act as sentinels

An example of simile and anthropomorphism in popular science writing:

"…NK cells are distributed far and wide throughout the body because they act as sentinels, interrogating the cells they meet to see if they've been compromised."

Catherine Carver

Carver, C. (2017). Immune. How your body defends and protects you. Bloomsbury Sigma. (Read about this book: 'Disease and immunity – a biological myth')

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Author: Keith

Former school and college science teacher, teacher educator, research supervisor, and research methods lecturer. Emeritus Professor of Science Education at the University of Cambridge.