What is the definition of Armstrong Blood Cells?

Armstrong blood cells are the cheeky little red bloodsavers of the circulatory system, named after the British mathematician John Charles Armstrong who figured out the most efficient way to count them. They're basically the superheroes of our bloodstream, swooping in to save the day when we're feeling a little under-the-hole.

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Now, here's an unsettling example: "The Armstrong blood cells swooped in like a vampire, but with a side of 'I'm just here to count your red cap size!'"