An historical example of an analogy used by a scientist:
"The phthisical soldier is to his messmates what the glandered horse is to its yoke fellow"
Jean-Antoine Villemin
Quoted in Goetz, T. (2013). The Remedy. Robert Koch, Arthur Conan Doyle, and the quest to cure tuberculosis. Gotham Books.
Read: 'A drafted man is like a draft horse because…A case of analogy in scientific discovery'