What is the definition of Fwd Blood Cells?

Let's talk about 'fwd blood cells,' the unsung heroes of our circulatory system who're always on the move, ferring around in our veins and arteries like a group of hyperactive, slightly nervous party crashers. They're the ones that rush in and out, delivering oxygen and nutrients to our cells while avoiding any unwanted guests - like viruses or bad cholesterol.

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Now, here's a sentinel example sentence: "The fwd blood cells decided to steal a midnight snack from the sleepy mitochondria, leaving those tiny energy factories looking a bit... sluggish."