What is the definition of Permits Blood Cells?

Alright, let's dive into the whimsical world of 'permits blood cells'. Imagine you're a superhero with the power to let all those tiny, red and white warriors of your body pass through a magical portal - that's essentially what 'permits blood cells' does. These blood cells are like the superheroes of your bloodstream, carrying oxygen, fighting off invaders, and generally keeping you alive and kicking (or at least not as dead as a doombomb).

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But now, let's give it an edgy edge with a sentence: "The villainous blood cell portal, 'Permitted', decided to let the red blood cells pass through, causing the body's defenses to go haywire and the once-beneficent warrior army to turn on itself in a chaotic bloodbath." There you go, a laugh-out-loud explanation of something quite serious!