An example of metaphor in popular science writing:
"For instance, they [bacteria] can change their surface so the antibiotic can no longer get inside the bacterium, or develop antibiotic bilge pumps that prevent the drug from building up. Alternatively they may create new metabolic pathways that mean they can bypass the antibiotic's roadblock."
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')
Read about metaphor in science
Read about examples of science metaphors
Many examples of science metaphors are listed in 'Creative comparisons: Making science familiar through language. An illustrative catalogue of figurative comparisons and analogies for science concepts'. Free Download.