There's a story in Rhodes' book on the atom bomb of Otto Frisch & Liese Mettner discussing the ideation of nuclear fission analogised to cell fission, drawn as

There's a story in Rhodes' book on the atom bomb of Otto Frisch & Liese Mettner discussing the ideation of nuclear fission analogised to cell fission, drawn as a dumbbell viewed head on with the neck of the split a circle inside the bigger cell circle:, where we classically see two cells splitting side by side with a channel between them: she meant exactly the same thing viewed 90° rotated.